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Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Identifying the Canonical Component for the Whitehead Link | math.GT | physics.ed-ph cond-mat.soft |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Progress on Quantum Discord of Two Qubit states: Optimization and Upper
Bound
Calculation of the quantum discord requires to find the minimum of the
quantum conditional entropy $S(\rho^{AB}|\{\Pi^B_{k}\})$ over all measurements
on the subsystem $B$. In this paper, we provide a simple relation for the
conditional entropy as the difference of two Shannon entropies. The relation is
suitable for calculation of the quantum discord in the sense that it can by
used to obtain the quantum discord for some classes of two-qubit states,
without the need for minimization. We also present an analytical procedure of
optimization and obtain conditions under which the quantum conditional entropy
of a general two-qubit state is stationary. The presented relation is also used
to find a tight upper bound on the quantum discord.
| quant-ph | stat.AP cs.CV stat.ML |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
On a special case of Watkins' conjecture | math.NT | cs.SC cs.CC cs.CR quant-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
On the Log Discrepancies in Toric Mori Contractions
It was conjectured by McKernan and Shokurov that for all Mori contractions
from X to Y of given dimensions, for any positive epsilon there is a positive
delta, such that if X is epsilon-log terminal, then Y is delta-log terminal. We
prove this conjecture in the toric case and discuss the dependence of delta on
epsilon, which seems mysterious.
| math.AG | math.AT hep-th math.AG math.QA |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
One-dimensional array of ion chains coupled to an optical cavity | quant-ph physics.atom-ph | cs.CE q-bio.GN |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Coordinated Multi Point Transmission and Reception for Mixed-Delay
Traffic
This paper analyzes the multiplexing gains (MG) for simultaneous transmission
of delay-sensitive and delay-tolerant data over interference networks. In the
considered model, only delay-tolerant data can profit from coordinated
multipoint (CoMP) transmission or reception techniques, because delay-sensitive
data has to be transmitted without further delay. Transmission of
delay-tolerant data is also subject to a delay constraint, which is however
less stringent than the one on delay-sensitive data. Different coding schemes
are proposed, and the corresponding MG pairs for delay-sensitive and
delay-tolerant data are characterized for Wyner's linear symmetric network and
for Wyner's two-dimensional hexagonal network with and without sectorization.
For Wyner's linear symmetric also an information-theoretic converse is
established and shown to be exact whenever the cooperation rates are
sufficiently large or the delay-sensitive MG is small or moderate. These
results show that on Wyner's symmetric linear network and for sufficiently
large cooperation rates, the largest MG for delay-sensitive data can be
achieved without penalizing the maximum sum-MG of both delay-sensitive and
delay-tolerant data. A similar conclusion holds for Wyner's hexagonal network
only for the model with sectorization. In the model without sectorization, a
penalty in sum-MG is incurred whenever one insists on a positive
delay-sensitive MG.
| cs.IT math.IT | cond-mat.stat-mech math.AT |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Further consistency tests of the stability of fundamental couplings | astro-ph.CO gr-qc hep-ph hep-th | physics.flu-dyn astro-ph.EP physics.ao-ph physics.geo-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Cas d'existence de solutions d'EDP
We give some examples of the existence of solutions of geometric PDEs (Yamabe
equation, Prescribed Scalar Curvature Equation, Gaussian curvature). We also
give some remarks on second order PDE and Green functions and on the maximum
principles. And on Harnack type inequalities and Sobolev and interpolation
inequality. And some remarks on the equations.
| math.AP | math.OC cs.SY eess.SY math.DS physics.class-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Hidden Quantum Markov Models and Open Quantum Systems with Instantaneous
Feedback | quant-ph | cs.LG cond-mat.str-el quant-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Towards a Characterization of Leaf Powers by Clique Arrangements
The class ${\cal L}_k$ of $k$-leaf powers consists of graphs $G=(V,E)$ that
have a $k$-leaf root, that is, a tree $T$ with leaf set $V$, where $xy \in E$,
if and only if the $T$-distance between $x$ and $y$ is at most $k$. Structure
and linear time recognition algorithms have been found for $2$-, $3$-, $4$-,
and, to some extent, $5$-leaf powers, and it is known that the union of all
$k$-leaf powers, that is, the graph class ${\cal L} = \bigcup_{k=2}^\infty
{\cal L}_k$, forms a proper subclass of strongly chordal graphs. Despite from
that, no essential progress has been made lately. In this paper, we use the new
notion of clique arrangements to suggest that leaf powers are a natural special
case of strongly chordal graphs. The clique arrangement ${\cal A}(G)$ of a
chordal graph $G$ is a directed graph that represents the intersections between
maximal cliques of $G$ by nodes and the mutual inclusion of these vertex
subsets by arcs. Recently, strongly chordal graphs have been characterized as
the graphs that have a clique arrangement without bad $k$-cycles for $k \geq
3$. We show that the clique arrangement of every graph of ${\cal L}$ is free of
bad $2$-cycles. The question whether this characterizes the class ${\cal L}$
exactly remains open.
| cs.DM math.CO | eess.SP cs.AR stat.CO stat.ME |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
The Systematic Properties of the Warm Phase of Starburst-Driven Galactic
Winds | astro-ph.GA | cs.CY cs.GR cs.SI physics.data-an physics.soc-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Validity of the second law in nonextensive quantum thermodynamics
The second law of thermodynamics in nonextensive statistical mechanics is
discussed in the quantum regime. Making use of the convexity property of the
generalized relative entropy associated with the Tsallis entropy indexed by q,
Clausius' inequality is shown to hold in the range of q between zero and two.
This restriction on the range of the entropic index, q, is purely quantum
mechanical and there exists no upper bound of q for validity of the second law
in classical theory.
| cond-mat.stat-mech | math.NA astro-ph.HE cs.NA physics.comp-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Critical Angle at a Moving Interface Formed by a Space-Time Modulation
Step | physics.class-ph physics.optics | math.MG cs.SY eess.SP eess.SY |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Analytic expressions of hydrothermal waves
When subjected to a horizontal temperature difference, a fluid layer with a
free surface becomes unstable and hydrothermal waves develop in the bulk. Such
a system is modelized by two coupled amplitude equations of the
one-dimensional, complex, cubic Ginzburg-Landau type. By transposing the method
developed for one CGL3 equation, we obtain several new exact solutions
expressed by closed form, singlevalued, analytic expressions. Some of them are
the analogue of the famous amplitude hole solution of Bekki and Nozaki.
| nlin.SI nlin.PS | cs.CG cs.DM math.CO math.GT |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Landau Cooling in Metal-Semiconductor Nanostructures | cond-mat.mes-hall | cond-mat.str-el cond-mat.stat-mech gr-qc hep-th |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Removal of the resolvent-like dependence on the spectral parameter from
perturbations
The spectral problem (A + V(z))\psi=z\psi is considered with A, a
self-adjoint operator. The perturbation V(z) is assumed to depend on the
spectral parameter z as resolvent of another self-adjoint operator A':
V(z)=-B(A'-z)^{-1}B^{*}. It is supposed that the operator B has a finite
Hilbert-Schmidt norm and spectra of the operators A and A' are separated.
Conditions are formulated when the perturbation V(z) may be replaced with a
``potential'' W independent of z and such that the operator H=A+W has the same
spectrum and the same eigenfunctions (more precisely, a part of spectrum and a
respective part of eigenfunctions system) as the initial spectral problem. The
operator H is constructed as a solution of the non-linear operator equation
H=A+V(H) with a specially chosen operator-valued function V(H). In the case if
the initial spectral problem corresponds to a two-channel variant of the
Friedrichs model, a basis property of the eigenfunction system of the operator
H is proved. A scattering theory is developed for H in the case where the
operator A has continuous spectrum.
| math.SP | nlin.PS math-ph math.AP math.MP nlin.SI |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Greenlees-May Duality in a Nutshell | math.AC | cs.DM cs.CC cs.DS cs.IT math.IT |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Conjugation on varieties of nilpotent matrices
We consider the conjugation-action of an arbitrary upper-block parabolic
subgroup of GL_n(C) on the variety of x-nilpotent complex matrices. We obtain a
criterion as to whether the action admits a finite number of orbits and specify
a system of representatives for the orbits in the finite case of 2-nilpotent
matrices. Furthermore, we give a set-theoretic description of their closures
and specify the minimal degenerations in detail for the action of the Borel
subgroup. Concerning the action on the nilpotent cone, we obtain a generic
normal form of the orbits which yields a U-normal form as well, here U is the
standard unipotent subgroup. We describe generating (semi-) invariants for the
Borel semi-invariant ring as well as for the U-invariant ring. The latter is
described in more detail in terms of algebraic quotients by a special toric
variety closely related.
| math.RT | math.AP cs.NA math.NA physics.class-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Towards the Forensic Identification and Investigation of Cloud Hosted
Servers through Noninvasive Wiretaps | cs.DC cs.CR cs.NI | math.AP cond-mat.stat-mech |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Phased-Locked Two-Color Single Soliton Microcombs in
Dispersion-Engineered Si3N4 Resonators
We propose and theoretically investigate a dispersion-engineered Si3N4
microring resonator, based on a cross-section containing a partially-etched
trench, that supports phase-locked, two-color soliton microcomb states. These
soliton states consist of a single circulating intracavity pulse with a
modulated envelope that sits on a continuous wave background. Such temporal
waveforms produce a frequency comb whose spectrum is spread over two
widely-spaced spectral windows, each exhibiting a squared hyperbolic secant
envelope, with the two windows phase-locked to each other via Cherenkov
radiation. The first spectral window is centered around the 1550 nm pump, while
the second spectral window is tailored based on straightforward geometric
control, and can be centered as short as 750 nm and as long as 3000 nm. We
numerically analyze the robustness of the design to parameter variation, and
consider its implications to self-referencing and visible wavelength comb
generation.
| physics.optics | astro-ph.HE physics.comp-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Smoothing and Interpolating Noisy GPS Data with Smoothing Splines | stat.ME physics.data-an stat.AP stat.CO stat.ML | dg-ga math-ph math.DG math.MP nlin.SI solv-int |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Single crystal investigation of proposed type-II Weyl semimetal CeAlGe
We present details of materials synthesis, crystal structure, and anisotropic
magnetic properties of single crystals of CeAlGe, a proposed type-II Weyl
semimetal. Single-crystal x-ray diffraction confirms that CeAlGe forms in
noncentrosymmetric I4$_1$md space group, in line with predictions of
non-trivial topology. Magnetization, specific heat and electrical transport
measurements were used to confirm antiferromagnetic order below 5 K, with an
estimated magnon excitation gap of $\Delta$ = 9.11 K from heat capacity and
hole-like carrier density of 1.44 $\times$ 10$^{20}$ cm$^{-3}$ from Hall effect
measurements. The easy magnetic axis is along the [100] crystallographic
direction, indicating that the moment lies in the tetragonal $\it{ab}$-plane
below 7 K. A spin-flop transition to less than 1 $\mu_B$/Ce is observed to
occur below 30 kOe at 1.8 K in the $M(H)$ ($\bf{H}\|\bf{a}$) data. Small
magnetic fields of 3 kOe and 30 kOe are sufficient to suppress magnetic order
when applied along the $\it{a}$- and $\it{c}$-axes, respectively, resulting in
a complex $\it{T-H}$ phase diagram for $\bf{H}\|\bf{a}$ and a simpler one for
$\bf{H}\|\bf{c}$.
| cond-mat.str-el | math.CO hep-ph hep-th |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles
Query:
Radio Resource Allocation in LTE-Advanced Cellular Networks with M2M
Communications | cs.IT cs.NI math.IT | q-fin.PM quant-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
360{\deg} polarization control of terahertz spintronic emitters using
uniaxial FeCo/TbCo2/FeCo trilayers
Polarization control of THz light is of paramount interest for the numerous
applications offered in this frequency range. Recent developments in THz
spintronic emitters allow for a very efficient broadband emission, and
especially unique is their ability of THz polarization switching through
magnetization control of the ferromagnetic layer. Here we present an improved
scheme to achieve full 360{\deg} nearly coherent polarization rotation that
does not require multipolar or rotating external magnetic bias nor complex
cascaded emitters. By replacing the FM layer of the spintronic emitter with a
carefully designed FeCo/TbCo2/FeCo anisotropic heterostructure, we
experimentally demonstrate Stoner-Wohlfarth-like coherent rotation of the THz
polarization over a full 2pi azimuth only by a bipolar variation of the
strength of the hard axis field, and with only a negligible decrease in the
emission efficiency as compared to standard Pt/CoFeB/W inverse spin Hall
emitters. THz measurements are in agreement with our model of the non-perfect
Stoner-Wohlfarth behaviour. These emitters are well adapted for the
implementation of polarimetric characterization not requiring any mechanically
rotating polarizing elements. An example is given with the characterization of
the birefringence in a quartz plate.
| physics.optics | math.RT cs.SC math.GR |
Instruct:
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Query:
Nonlinear turbulent magnetic diffusion and effective drift velocity of
large-scale magnetic field in a two-dimensional magnetohydrodynamic
turbulence | astro-ph | physics.soc-ph cs.DL econ.GN q-fin.EC |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Confined phases of one-dimensional spinless fermions coupled to $Z_2$
gauge theory
We investigate a quantum many-body lattice system of one-dimensional spinless
fermions interacting with a dynamical $Z_2$ gauge field. The gauge field
mediates long-range attraction between fermions resulting in their confinement
into bosonic dimers. At strong coupling we develop an exactly solvable
effective theory of such dimers with emergent constraints. Even at generic
coupling and fermion density, the model can be rewritten as a local spin chain.
Using the Density Matrix Renormalization Group the system is shown to form a
Luttinger liquid, indicating the emergence of fractionalized excitations
despite the confinement of lattice fermions. In a finite chain we observe the
doubling of the period of Friedel oscillations which paves the way towards
experimental detection of confinement in this system. We discuss the
possibility of a Mott phase at the commensurate filling $2/3$.
| cond-mat.str-el cond-mat.quant-gas hep-lat hep-th | nlin.AO cond-mat.stat-mech nlin.CG |
Instruct:
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Query:
Fast Algorithms for Sparse Recovery with Perturbed Dictionary | cs.IT math.IT | cond-mat.mtrl-sci math.NA physics.comp-ph |
Instruct:
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Query:
Spin-dependent effective interactions for halo nuclei
We discuss the spin-dependence of the effective two-body interactions
appropriate for three-body computations. The only reasonable choice seems to be
the fine and hyperfine interactions known for atomic electrons interacting with
the nucleus. One exception is the nucleon-nucleon interaction imposing a
different type of symmetry. We use the two-neutron halo nucleus 11Li as
illustration. We demonstrate that models with the wrong spin-dependence are
basically without predictive power. The Pauli forbidden core and valence states
must be consistently treated.
| nucl-th | chao-dyn nlin.CD |
Instruct:
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Query:
A short proof for the characterisation of tight frames | math.CA math.MG | stat.CO cs.SY math-ph math.DS math.MP math.OC |
Instruct:
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Query:
Constraining the Location of Microlensing Objects by using the Finite
Source Effect in EAGLE events
We propose a new method to constrain the location of microlensing objects
using EAGLE (Extremely Amplified Gravitational LEnsing) events. We have
estimated the rate of EAGLE events by taking the finite-source effect in to
account. We found that the EAGLE event rate for using a 1-m class telescope w
hose limiting magnitude is $V \sim 21$ is the same as or higher than that of
the ordinary microlensing events which have been found to date. We have also
found that the fraction of transit EAGLE events is large enough to detect:
between $4 \sim 80 % $ depending on the lens location. Since the lens proper
motion can be measured for a transit event, one can distinguish whether the
lens is a MACHO (MAssive Compact Halo Object) in our hal o or one of the known
stars in the Large Magellanic Cloud (LMC) from the proper motion measurement
for each transit EAGLE event. Moreover, we show that the fraction of transit
EAGLEs in all EAGLE events signif icantly depends on the lensing locations: the
transit EAGLE fraction for the sel f-lensing case is $2 \sim 15$ times larger
than that for halo MACHOs. Thus, one can constrain the location of lens objects
by the statistics of the tr ansit events fraction. We show that we can
reasonably expect $0 \sim 6$ transit events out of 21 EAGLE events in 3 years.
We can also constrain the lens population properties at a gre ater than 99%
confidence level depending on the number of transit events de tected. We also
present the duration of EAGLE events, and show how an hourly ob servational
mode is more suitable for an EAGLE event search program.
| astro-ph | math.OC q-fin.PM stat.AP |
Instruct:
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Query:
Temperature overshoot as the cause of physical changes in resistive
switching devices during electro-formation | physics.app-ph cond-mat.mtrl-sci | nlin.SI math-ph math.AG math.DG math.MP |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Machine Learning aided Precise Indoor Positioning
This study describes a UWB and Machine Learning (ML)-based indoor positioning
system. We propose a simple mathematical strategy to create data to reduce the
job of measurements for fingerprint-based indoor localization systems. A
considerable number of measurements can be avoided this way. The paper compares
and contrasts the performance of four distinct models. Most test locations'
average error may be reduced to less than 150 mm using the best model.
| eess.SP | physics.optics cond-mat.supr-con nlin.PS |
Instruct:
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Query:
On solubility of groups with finitely many centralizers | math.GR | cs.LG cs.AI cs.NE cs.SD eess.AS |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
New N=1 dualities from orientifold transitions - Part II: String Theory
We present a string theoretical description, given in terms of branes and
orientifolds wrapping vanishing cycles, of the dual pairs of gauge theories
analyzed in 1210.7799. Based on the resulting construction we argue that the
duality that we observe in field theory is inherited from S-duality of type IIB
string theory. We analyze in detail the complex cone over the zeroth del Pezzo
surface and discuss an infinite family of orbifolds of flat space. For the del
Pezzo case we describe the system in terms of large volume objects, and show
that in this language the duality can be understood from the strongly coupled
behavior of the O7^+ plane, which we analyze using simple F-theory
considerations. For all cases we also give a different argument based on the
existence of appropriate torsional components of the 3-form flux lattice. Along
the way we clarify some aspects of the description of orientifolds in the
derived category of coherent sheaves, and in particular we discuss the
important role played by exotic orientifolds - ordinary orientifolds composed
with auto-equivalences of the category - when describing orientifolds of
ordinary quiver gauge theories.
| hep-th | cs.IT math.IT stat.OT |
Instruct:
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Query:
Separation of time scales and direct computation of weights in deep
neural networks | cs.LG physics.data-an stat.ML | q-fin.ST cs.CE cs.LG cs.SI stat.ML |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Analysis of photometric uncertainties in the OGLE-IV Galactic Bulge
microlensing survey data
We present a statistical assessment of both, observed and reported,
photometric uncertainties in the OGLE-IV Galactic bulge microlensing survey
data. This dataset is widely used for the detection of variable stars,
transient objects, discovery of microlensing events, and characterization of
the exo-planetary systems. Large collections of RR Lyrae stars and Cepheids
discovered by the OGLE project toward the Galactic bulge provide light curves
based on this dataset. We describe the method of analysis, and provide the
procedure, which can be used to update preliminary photometric uncertainties,
provided with the light curves, to the ones reflecting the actual observed
scatter at a given magnitude and for a given CCD detector of the OGLE-IV
camera.This is of key importance for data modeling, in particular, for the
correct estimation of the goodness of fit.
| astro-ph.IM astro-ph.SR | gr-qc astro-ph.EP hep-th physics.space-ph |
Instruct:
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Query:
A Computational Model of Crowds for Collective Intelligence | cs.CY | cs.IR cs.CL cs.DB |
Instruct:
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Query:
An Example of the Curvature Tensor for a Quantum Space
The paper is constructed in two parts.In the first part we introduce the
concept of the algebra of Q-meromorphic functions on the quantum plane.The A
(q)-algebra of Q-analytic functions considered in[6]is seen as a proper
subalgebra. In the second part we find a formula for the curvature tensor on
this algebra. It is seen that when the quantization parameter tendsto 1,then
this formula gives the flatness of the usual R^2 .
| math.DG | math-ph math.CO math.MP math.OA nlin.CD |
Instruct:
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Query:
The dual complex of singularities | math.AG | astro-ph.IM cs.MS |
Instruct:
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Query:
A Low Cost Two-Tier Architecture Model For High Availability Clusters
Application Load Balancing
This article proposes a design and implementation of a low cost two-tier
architecture model for high availability cluster combined with load-balancing
and shared storage technology to achieve desired scale of three-tier
architecture for application load balancing e.g. web servers. The research work
proposes a design that physically omits Network File System (NFS) server nodes
and implements NFS server functionalities within the cluster nodes, through Red
Hat Cluster Suite (RHCS) with High Availability (HA) proxy load balancing
technologies. In order to achieve a low-cost implementation in terms of
investment in hardware and computing solutions, the proposed architecture will
be beneficial. This system intends to provide steady service despite any system
components fails due to uncertainly such as network system, storage and
applications.
| cs.NI cs.DC | physics.ed-ph math.HO physics.pop-ph |
Instruct:
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Query:
A Weyl-Dirac Cosmological Model with DM and DE | gr-qc astro-ph.CO | physics.acc-ph stat.AP |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Accelerating parameter estimation of gravitational waves from compact
binary coalescence using adaptive frequency resolutions
Bayesian parameter estimation of gravitational waves from compact binary
coalescence (CBC) typically requires more than millions of evaluations of
computationally expensive template waveforms. We propose a technique to reduce
the cost of waveform generation by exploiting the chirping behavior of CBC
signal. Our technique does not require waveforms at all frequencies in the
frequency range used in the analysis, and does not suffer from the fixed cost
due to the upsampling of waveforms. Our technique speeds up the parameter
estimation of typical binary neutron star signal by a factor of
$\mathcal{O}(10)$ for the low-frequency cutoff of $20\,\mathrm{Hz}$, and
$\mathcal{O}(10^2)$ for $5\,\mathrm{Hz}$. It does not require any offline
preparations or accurate estimates of source parameters provided by detection
pipelines.
| gr-qc astro-ph.HE astro-ph.IM | math.NA cs.NA cs.SD eess.AS |
Instruct:
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Query:
Meson-baryon reactions with strangeness -1 within a chiral framework | hep-ph nucl-th | cond-mat.quant-gas hep-lat |
Instruct:
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Query:
Nanoparticles for Multimodal Antivascular Therapeutics: Dual Drug
Release, Photothermal and Photodynamic Therapy
The poor delivery of nanoparticles to target cancer cells hinders their
success in the clinical setting. In this work, an alternative target readily
available for circulating nanoparticles has been selected to eliminate the need
for nanoparticle penetration in the tissue: the tumor blood vessels. A tumor
endothelium-targeted nanoparticle (employing an RGD-containing peptide) capable
of co-delivering two anti-vascular drugs (one anti-angiogenic drug and one
vascular disruption agent) is here presented. Furthermore, the nanodevice
presents two additional anti-vascular capabilities upon activation by
Near-Infrared light: provoking local hyperthermia (by gold nanorods in the
system) and generating toxic reactive oxygen species (by the presence of a
photosensitizer). RGD-targeting is shown to increase uptake by HUVEC cells, and
while the nanoparticles are shown not to be toxic for these cells, upon
Near-Infrared irradiation their almost complete killing is achieved. The
combination of all four therapeutic modalities is then evaluated in an ex ovo
fibrosarcoma xenograft model, which shows a significant reduction in the number
of blood vessels irrigating the xenografts when the nanoparticles are present,
as well as the destruction of the existing blood vessels upon irradiation.
These results suggest that the combination of different anti-vascular
therapeutic strategies in a single nanocarrier appears promising and should be
further explored in the future.
| physics.bio-ph | cs.LG cs.CE math.DS |
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Query:
Some remarks on spherical harmonics | math.CA math.MG | cs.RO cs.PL cs.SE |
Instruct:
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Query:
Bounds on the number of rational points of curves in families
In this note, we give an alternative proof of uniform boundedness of the
number of integral points of smooth projective curves over a fixed number field
with good reduction outside of a fixed set of primes. We use that due to
Bertin-Romagny, the Kodaira-Parshin families constructed by Lawrence-Venkatesh
can themselves be assembled into a family. We then repeat Lawrence-Venkatesh's
study of the p-adic period map, together with the comparison of nearby fibres.
| math.NT math.AG | math.OC cs.LG cs.MS |
Instruct:
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Query:
Better the Devil you Know: An Analysis of Evasion Attacks using
Out-of-Distribution Adversarial Examples | cs.LG cs.CR cs.CV stat.ML | cs.AR cond-mat.dis-nn cond-mat.stat-mech physics.comp-ph |
Instruct:
Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query:
Degrees of Freedom of Arbitrarily Higher-Derivative Field Theories
As an example of what happens with physically relevant theories like
effective gravity, we consider the covariant relativistic theory of a scalar
field of arbitrarily higher differential order. A procedure based on the
Legendre transformation and suitable field redefinitions allows to recast it as
a theory of second order with one explicit independent field for each degree of
freedom. The physical and ghost fields are then apparent. The full (classical)
equivalence of both Higher and Lower Derivative versions is shown. An artifact
of the method is the appearance of irrelevant spurious fields which are devoid
of any dynamical content.
| gr-qc hep-th | physics.hist-ph gr-qc physics.pop-ph |
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Belief Space Planning: A Covariance Steering Approach | cs.RO cs.SY eess.SY | cs.LG physics.ao-ph physics.data-an |
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Query:
Repulsion of Resonance States and Exceptional Points
Level repulsion is associated with exceptional points which are square root
singularities of the energies as functions of a (complex) interaction
parameter. This is also valid for resonance state energies. Using this concept
it is argued that level anti-crossing (crossing) must imply crossing
(anti-crossing) of the corresponding widths of the resonance states. Further,
itis shown that an encircling of an exceptional point induces a phase change of
one wave function but not of the other. An experimental setup is discussed
where this phase behaviour which differs from the one encountered at a diabolic
point can be observed.
| quant-ph | physics.ins-det cond-mat.mes-hall cond-mat.mtrl-sci |
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Nonlinear quantum mechanics implies polynomial-time solution for
NP-complete and #P problems | quant-ph | hep-ph physics.atom-ph physics.plasm-ph quant-ph |
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Query:
Thermodynamics of Dilatonic Black Holes in $n$ Dimensions
We present a formalism for studying the thermodynamics of black holes in
dilaton gravity. The thermodynamic variables are defined on a quasilocal
surface surrounding the black hole system and are obtained from a general class
of Lagrangians involving a dilaton. The formalism thus accommodates a large
number of possible theories and black hole spacetimes. Many of the
thermodynamic quantities are identified from the contribution of the action on
the quasilocal boundary. The entropy is found using path integral techniques,
and a first law of thermodynamics is obtained. As an illustration, we calculate
the thermodynamic quantities for two black hole solutions in $(1+1)$
dimensions: one obtained from a string inspired theory and the other being a
Liouville black hole in the ``$R=\kappa T$'' theory with a Liouville field.
| gr-qc hep-th | math.NA math.ST stat.CO stat.ME stat.TH |
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Classical mathematical structures within topological graph theory | math.GN cs.DM | physics.chem-ph cs.NA math.NA |
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Query:
Phonon-trapping enhanced energy resolution in superconducting single
photon detectors
A noiseless, photon counting detector, which resolves the energy of each
photon, could radically change astronomy, biophysics and quantum optics.
Superconducting detectors promise an intrinsic resolving power at visible
wavelengths of $R=E/\delta E\approx100$ due to their low excitation energy. We
study superconducting energy-resolving Microwave Kinetic Inductance Detectors
(MKIDs), which hold particular promise for larger cameras. A
visible/near-infrared photon absorbed in the superconductor creates a few
thousand quasiparticles through several stages of electron-phonon interaction.
Here we demonstrate experimentally that the resolving power of MKIDs at visible
to near-infrared wavelengths is limited by the loss of hot phonons during this
process. We measure the resolving power of our aluminum-based detector as a
function of photon energy using four lasers with wavelengths between $1545-402$
nm. For detectors on thick SiN/Si and sapphire substrates the resolving power
is limited to $10-21$ for the respective wavelengths, consistent with the loss
of hot phonons. When we suspend the sensitive part of the detector on a 110 nm
thick SiN membrane, the measured resolving power improves to $19-52$
respectively. The improvement is equivalent to a factor $8\pm2$ stronger phonon
trapping on the membrane, which is consistent with a geometrical phonon
propagation model for these hot phonons. We discuss a route towards the Fano
limit by phonon engineering.
| astro-ph.IM cond-mat.supr-con physics.ins-det | physics.pop-ph astro-ph.EP astro-ph.SR physics.bio-ph |
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On possible isolated blow-up phenomena of the 3D-Navier-Stokes equation
and a regularity criterion in terms of supercritical function space condition
and smoothness condition along the streamlines | math.AP | eess.IV cond-mat.mtrl-sci |
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Query:
Highly sensitive fluorescent pH microsensor based on the ratiometric dye
pyranine immobilized on silica microparticles
Pyranine (HPTS) is a remarkably interesting pH sensitive dye that has been
used for plenty of applications. Its high quantum yield and extremely sensitive
ratiometric fluorescence against pH change makes it a very favorable for pH
sensing applications and development of pH nano/microsensors. However, its
strong negative charge and lack of easily modifiable functional groups makes it
difficult to be used with charged substrates such as silica. This study reports
a noncovalent HPTS immobilization methodology on silica microparticles that
considers the retention of pH sensitivity as well as long term stability of the
pH microsensors. The study emphasizes on importance of surface charge for
governing the sensitivity of the immobilized HPTS dye molecules on silica
microparticles. Importance of methodology of immobilization that preserves the
sensitivity as well as stability of the microsensors is also assessed.
| physics.chem-ph cond-mat.mtrl-sci | physics.optics cond-mat.mes-hall cond-mat.mtrl-sci physics.comp-ph |
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Query:
Conjectures and questions in convex geometry (of interest for quantum
theory and other physical statistical theories) | math.MG quant-ph | astro-ph.CO astro-ph.HE hep-ph nucl-th |
Instruct:
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Query:
Classical conformal blocks, Coulomb gas integrals and Richardson-Gaudin
models
Virasoro conformal blocks are universal ingredients of correlation functions
of two-dimensional conformal field theories (2d CFTs) with Virasoro symmetry.
It is acknowledged that in the (classical) limit of large central charge of the
Virasoro algebra and large external, and intermediate conformal weights with
fixed ratios of these parameters Virasoro blocks exponentiate to functions
known as Zamolodchikovs' classical blocks. The latter are special functions
which have awesome mathematical and physical applications. Uniformization,
monodromy problems, black holes physics, quantum gravity, entanglement, quantum
chaos, holography, N=2 gauge theory and quantum integrable systems (QIS) are
just some of contexts, where classical Virasoro blocks are in use. In this
paper, exploiting known connections between power series and integral
representations of (quantum) Virasoro blocks, we propose new finite closed
formulae for certain multi-point classical Virasoro blocks on the sphere.
Indeed, combining classical limit of Virasoro blocks expansions with a saddle
point asymptotics of Dotsenko-Fateev (DF) integrals one can relate classical
Virasoro blocks with a critical value of the "Dotsenko-Fateev matrix model
action". The latter is the "DF action" evaluated on a solution of saddle point
equations which take the form of Bethe equations for certain QIS (Gaudin spin
models). A link with integrable models is our main motivation for this research
line. ... .
| hep-th cond-mat.mes-hall | physics.ao-ph cs.LG |
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Query:
Quantum phase transitions in a spin-1 antiferromagnetic chain with
long-range interactions and modulated single-ion anisotropy | cond-mat.str-el cond-mat.mtrl-sci | comp-gas astro-ph nlin.CG |
Instruct:
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Query:
Modified light cone condition via vacuum polarization in a time
dependent field
The appearance of unconventional vacuum properties in intense fields has long
been an active field of research. In this paper the vacuum polarization effect
is investigated via a pump probe scheme of a probe light propagating in the
vacuum excited by two counter-propagating laser beams. The modified light cone
condition of the probe light is derived analytically for the situation that it
passes through the electric/magnetic antinode plane of the pump field. The
derivation does not follow the commonly adopted assumption of treating the pump
field as a constant field. Differences from the conventional light cone
conditions are identified. The implications of the result are discussed with a
consideration of the vacuum birefringence measurement.
| physics.atom-ph hep-th physics.optics | cs.NE cs.AI cs.LG stat.ML |
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Query:
On covers of graphs by Cayley graphs | math.GR math.CO | cs.AI cs.CE cs.LG cs.SI |
Instruct:
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Query:
Determining the Hubble Constant from Ryle Telescope observations
We describe our algorithm for measuring the Hubble constant from Ryle
Telescope (RT) interferometric observations of the Sunyaev-Zel'dovich (SZ)
effect from a galaxy cluster and observation of the cluster X-ray emission. We
analyse the error budget in this method: as well as radio and X-ray random
errors, we consider the effects of clumping and temperature differences in the
cluster gas, of the kinetic SZ effect, of bremsstrahlung emission at radio
wavelengths, of the gravitational lensing of background radio sources and of
primary calibration error. Using RT, ASCA and ROSAT observations of the cluster
Abell 1413, we find that random errors dominate over systematic ones, and
estimate H_0 = 57^{+23}_{-16} km/s/Mpc (1-sigma errors).
| astro-ph | physics.ed-ph physics.flu-dyn physics.ins-det physics.optics |
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Query:
Marginal Structural Models for Time-varying Endogenous Treatments: A
Time-Varying Instrumental Variable Approach | stat.ME | astro-ph cond-mat.stat-mech nlin.CD |
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Query:
Polarizing electron spins with a superconducting flux qubit
Electron spin resonance (ESR) is a useful tool to investigate properties of
materials in magnetic fields where high spin polarization of target electron
spins is required in order to obtain high sensitivity. However, the smaller
magnetic fields becomes, the more difficult high polarization is passively
obtained by thermalization. Here, we propose to employ a superconducting flux
qubit (FQ) to polarize electron spins actively. We have to overcome a large
energy difference between the FQ and electron spins for efficient energy
transfer among them. For this purpose, we adopt a spin-lock technique on the FQ
where the Rabi frequency associated with the spin-locking can match the
resonance (Larmor) one of the electron spins. We find that adding dephasing on
the spins is beneficial to obtain high polarization of them, because otherwise
the electron spins are trapped in dark states that cannot be coupled with the
FQ. We show that our scheme can achieve high polarization of electron spins in
realistic experimental conditions.
| quant-ph | cs.AI physics.flu-dyn |
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Query:
Probing gluon helicity distribution and quark transversity through
hyperon polarization in singly polarized pp collisions | hep-ph | physics.bio-ph cond-mat.soft nlin.PS |
Instruct:
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Query:
Adversarial Examples for Electrocardiograms
In recent years, the electrocardiogram (ECG) has seen a large diffusion in
both medical and commercial applications, fueled by the rise of single-lead
versions. Single-lead ECG can be embedded in medical devices and wearable
products such as the injectable Medtronic Linq monitor, the iRhythm Ziopatch
wearable monitor, and the Apple Watch Series 4. Recently, deep neural networks
have been used to automatically analyze ECG tracings, outperforming even
physicians specialized in cardiac electrophysiology in detecting certain rhythm
irregularities. However, deep learning classifiers have been shown to be
brittle to adversarial examples, which are examples created to look
incontrovertibly belonging to a certain class to a human eye but contain subtle
features that fool the classifier into misclassifying them into the wrong
class. Very recently, adversarial examples have also been created for
medical-related tasks. Yet, traditional attack methods to create adversarial
examples, such as projected gradient descent (PGD) do not extend directly to
ECG signals, as they generate examples that introduce square wave artifacts
that are not physiologically plausible. Here, we developed a method to
construct smoothed adversarial examples for single-lead ECG. First, we
implemented a neural network model achieving state-of-the-art performance on
the data from the 2017 PhysioNet/Computing-in-Cardiology Challenge for
arrhythmia detection from single lead ECG classification. For this model, we
utilized a new technique to generate smoothed examples to produce signals that
are 1) indistinguishable to cardiologists from the original examples and 2)
incorrectly classified by the neural network. Finally, we show that adversarial
examples are not unique and provide a general technique to collate and perturb
known adversarial examples to create new ones.
| eess.SP cs.CR cs.LG stat.ML | physics.space-ph astro-ph.HE astro-ph.SR physics.plasm-ph |
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Query:
The complete Dirichlet-to-Neumann map for differential forms | math.DG math.AP | physics.flu-dyn math-ph math.MP physics.bio-ph physics.med-ph |
Instruct:
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Query:
Who Watches the New Watchmen? The Challenges for Drone Digital Forensics
Investigations
The technological advance of drone technology has augmented the existing
capabilities of flying vehicles rendering them a valuable asset of the modern
society. As more drones are expected to occupy the airspace in the near future,
security-related incidents, either malicious acts or accidents, will increase
as well. The forensics analysis of a security incident is essential, as drones
are flying above populated areas and have also been weaponised from radical
forces and perpetrators. Thus, it is an imperative need to establish a Drone
Digital Forensics Investigation Framework and standardise the processes of
collecting and processing such evidence. Although there are numerous drone
platforms in the market, the same principles apply to all of them; just like
mobile phones. Nevertheless, due to the nature of drones, standardised
forensics procedures to date do not manage to address the required processes
and challenges that such investigations pose. Acknowledging this need, we
detail the unique characteristics of drones and the gaps in existing
methodologies and standards, showcasing that there are fundamental issues in
terms of their forensics analysis from various perspectives, ranging from
operational and procedural ones, and escalate to manufacturers, as well as
legal restrictions. The above creates a very complex environment where
coordinated actions must be made among the key stakeholders. Therefore, this
work paves the way to address these challenges by identifying the main issues,
their origins, and the needs in the field by performing a thorough review of
the literature and a gap analysis.
| cs.CR | physics.atom-ph astro-ph.IM hep-ex |
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Query:
Controlling the fluid-fluid mixing-demixing phase transition with
electric fields | cond-mat.soft | math.OC cs.SY nlin.AO |
Instruct:
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Query:
Guerra's interpolation using Derrida-Ruelle cascades
New results about Poisson-Dirichlet point processes and Derrida-Ruelle
cascades allow us to express Guerra's interpolation entirely in the language of
Derrida-Ruelle cascades and to streamline Guerra's computations. Moreover, our
approach clarifies the nature of the error terms along the interpolation.
| math.PR math-ph math.MP | cs.ET cond-mat.mtrl-sci cs.AR physics.chem-ph |
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Query:
The Very Low Albedo of WASP-12b From Spectral Eclipse Observations with
$\textit{Hubble}$ | astro-ph.EP | math-ph math.MP q-fin.PR |
Instruct:
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Query:
Energy transfer in structured and unstructured environments: master
equations beyond the Born-Markov approximations
We explore excitonic energy transfer dynamics in a molecular dimer system
coupled to both structured and unstructured oscillator environments. By
extending the reaction coordinate master equation technique developed in [J.
Iles-Smith, N. Lambert, and A. Nazir, Phys. Rev. A 90, 032114 (2014)], we go
beyond the commonly used Born-Markov approximations to incorporate
system-environment correlations and the resultant non-Markovian dynamical
effects. We obtain energy transfer dynamics for both underdamped and overdamped
oscillator environments that are in perfect agreement with the numerical
hierarchical equations of motion over a wide range of parameters. Furthermore,
we show that the Zusman equations, which may be obtained in a semiclassical
limit of the reaction coordinate model, are often incapable of describing the
correct dynamical behaviour. This demonstrates the necessity of properly
accounting for quantum correlations generated between the system and its
environment when the Born-Markov approximations no longer hold. Finally, we
apply the reaction coordinate formalism to the case of a structured environment
comprising of both underdamped (i.e. sharply peaked) and overdamped (broad)
components simultaneously. We find that though an enhancement of the dimer
energy transfer rate can be obtained when compared to an unstructured
environment, its magnitude is rather sensitive to both the dimer-peak resonance
conditions and the relative strengths of the underdamped and overdamped
contributions.
| physics.chem-ph cond-mat.mes-hall quant-ph | cond-mat.soft q-bio.BM q-bio.GN |
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Query:
The landscape of software for tensor computations | cs.MS | physics.plasm-ph nlin.PS physics.flu-dyn |
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Query:
Hypercontractivity, Nash inequalities, and subordination for classes of
nonlinear semigroups
A suitable notion of hypercontractivity for a nonlinear semigroup $\{T_t\}$
is shown to imply Gagliardo--Nirenberg inequalities for its generator $H$,
provided a subhomogeneity property holds for the energy functional $(u,Hu)$. We
use this fact to prove that, for semigroups generated by operators of
$p$--Laplacian--type, hypercontractivity implies ultracontractivity. We then
introduce the notion of subordinated nonlinear semigroups when the
corresponding Bernstein function is $f(x)=x^\alpha$, and write down an explicit
formula for the associated generator. It is shown that, in certain cases,
hypercontractivity still holds for the subordinated semigroup and, hence, that
Nash--type inequalities holds as well for the subordinated generator.
| math.FA | q-bio.MN physics.data-an q-bio.QM q-bio.SC |
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Query:
Cascades and dissipation ratio in rotating MHD turbulence at low
magnetic Prandtl number | physics.flu-dyn astro-ph.GA physics.plasm-ph | econ.GN q-fin.EC q-fin.GN |
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Query:
Lane formation by side-stepping
In this paper we study a system of nonlinear partial differential equations,
which describes the evolution of two pedestrian groups moving in opposite
direction. The pedestrian dynamics are driven by aversion and cohesion, i.e.
the tendency to follow individuals from the own group and step aside in the
case of contraflow. We start with a 2D lattice based approach, in which the
transition rates reflect the described dynamics, and derive the corresponding
PDE system by formally passing to the limit in the spatial and temporal
discretization. We discuss the existence of special stationary solutions, which
correspond to the formation of directional lanes and prove existence of global
in time bounded weak solutions. The proof is based on an approximation argument
and entropy inequalities. Furthermore we illustrate the behavior of the system
with numerical simulations.
| math.AP | q-fin.RM cs.LG cs.NE stat.ML |
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Query:
Potentials and Limits of Super-Resolution Algorithms and Signal
Reconstruction from Sparse Data | physics.optics cs.CV math-ph math.MP | q-bio.NC cs.AI cs.LG cs.NE cs.SC |
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Query:
Towards NNLO+PS Matching with Sector Showers
We outline a new technique for the fully-differential matching of final-state
parton showers to NNLO calculations, focussing here on the simplest case of
leptonic collisions with two final-state jets. The strategy is facilitated by
working in the antenna formalism, making use of NNLO antenna subtraction on the
fixed-order side and the sector-antenna framework on the shower side. As long
as the combined real-virtual and double-real corrections do not overcompensate
the real-emission term in the three-jet region, negative weights can be
eliminated from the matching scheme. We describe the implementation of all
necessary components in the VINCIA antenna shower in PYTHIA 8.3.
| hep-ph hep-ex | math.DS math.CA math.GN |
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Query:
Investigation of gamma ray detection performance of thin LFS
scintillator with MAPD readout | physics.ins-det nucl-ex | hep-th cond-mat.other hep-ph nucl-th |
Instruct:
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Query:
Carleson measures for weighted Hardy-Sobolev spaces
We obtain characterizations of positive Borel measures $\mu$ on $\B^n$ so
that some weighted Hardy-Sobolev are imbedded in $L^p(d\mu)$, where $w$ is an
$A_p$ weight in the unit sphere of $\C^n$.
| math.CV | math.NA cs.IT cs.NA eess.SP math.FA math.IT |
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Query:
Analysis and Optimization of fastText Linear Text Classifier | cs.CL | adap-org nlin.AO q-bio.NC |
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Query:
Zone edge focused two-phonon processes in He atom scattering from a
simple prototype system: Xe(111)
We present a theoretical analysis of the multiphonon features appearing in
the angular and energy resolved scattering spectra of low energy He atoms
inelastically scattered from surface phonons. By applying the recently
developed fully quantum multiphonon scattering formalism to the benchmark
system Xe(111) we are able to reproduce with great accuracy the experimental
data and also demonstrate how in the transition from a single- to a few- to a
multiphonon scattering regime the one- and the many-phonon components of the
scattering spectra evolve as the mean number of exchanged phonons increases
with the increase of He atom incident energy. We show how the two-phonon
processes may give rise to distinct peaks in the scattering spectrum as a
result of the zone edge focusing effects and how the many-phonon features may
still produce a structured background before the true multiphonon limit
characterised by a Gaussian spectral shape is reached. These findings should
prove useful in the interpretation of multiphonon He atom scattering spectra
from other systems with similar surface vibrational properties.
| cond-mat.stat-mech cond-mat.soft | physics.atom-ph physics.chem-ph physics.class-ph physics.optics |
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Query:
Jumps and twists in affine Toda field theories | hep-th math-ph math.MP nlin.SI | q-bio.PE cond-mat.dis-nn physics.bio-ph |
Instruct:
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Query:
Egocentric Image Captioning for Privacy-Preserved Passive Dietary Intake
Monitoring
Camera-based passive dietary intake monitoring is able to continuously
capture the eating episodes of a subject, recording rich visual information,
such as the type and volume of food being consumed, as well as the eating
behaviours of the subject. However, there currently is no method that is able
to incorporate these visual clues and provide a comprehensive context of
dietary intake from passive recording (e.g., is the subject sharing food with
others, what food the subject is eating, and how much food is left in the
bowl). On the other hand, privacy is a major concern while egocentric wearable
cameras are used for capturing. In this paper, we propose a privacy-preserved
secure solution (i.e., egocentric image captioning) for dietary assessment with
passive monitoring, which unifies food recognition, volume estimation, and
scene understanding. By converting images into rich text descriptions,
nutritionists can assess individual dietary intake based on the captions
instead of the original images, reducing the risk of privacy leakage from
images. To this end, an egocentric dietary image captioning dataset has been
built, which consists of in-the-wild images captured by head-worn and
chest-worn cameras in field studies in Ghana. A novel transformer-based
architecture is designed to caption egocentric dietary images. Comprehensive
experiments have been conducted to evaluate the effectiveness and to justify
the design of the proposed architecture for egocentric dietary image
captioning. To the best of our knowledge, this is the first work that applies
image captioning to dietary intake assessment in real life settings.
| cs.CV | math.PR q-bio.GN |
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Query:
Visualising interactive inferences with IDPD3 | cs.PL cs.AI | physics.data-an cond-mat.stat-mech nlin.AO |
Instruct:
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Query:
Moscow-type NN-potentials and three-nucleon bound states
A detailed description of Moscow-type (M-type) potential models for the NN
interaction is given. The microscopic foundation of these models, which appear
as a consequence of the composite quark structure of nucleons, is discussed.
M-type models are shown to arise naturally in a coupled channel approach when
compound or bag-like six-quark states, strongly coupled to the NN channel, are
eliminated from the complete multiquark wave function. The role of the
deep-lying bound states that appear in these models is elucidated. By
introducing additional conditions of orthogonality to these compound six-quark
states, a continuous series of almost on-shell equivalent nonlocal interaction
models, characterized by a strong reduction or full absence of a local
repulsive core (M-type models), is generated. The predictions of these
interaction models for 3N systems are analyzed in detail. It is shown that
M-type models give, under certain conditions, a stronger binding of the 3N
system than the original phase-equivalent model with nodeless wave functions.
An analysis of the 3N system with the new versions of the Moscow NN potential
describing also the higher even partial waves is presented. Large deviations
from conventional NN force models are found for the momentum distribution in
the high momentum region. In particular, the Coulomb displacement energy for
nuclei ^3He - ^3H displays a promising agreement with experiment when the ^3H
binding energy is extrapolated to the experimental value.
| nucl-th | cs.LG physics.comp-ph quant-ph stat.ML |
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Query:
Strongly coupled quantum heat machines | quant-ph | hep-th astro-ph hep-ph math-ph math.MP |
Instruct:
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Query:
Building active and collaborative learning environment in introductory
physics course of faculty of technology education
Model of active and collaborative learning applied in training specific
subject makes clear advantage due to the goals of knowledge, enhanced
activeness, skills that students got to develop successful future job. Studying
and applying the model to build a learning environment in the Introductory
Physics course with the support of ICT, especially social network and eLearning
system of HNUE.
| cs.CY | cs.IT cs.CR cs.IR math.IT |
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Query:
Search for high-redshift blazars with Fermi/LAT | astro-ph.HE | gr-qc cs.LG math.DS |
Instruct:
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Query:
SUSY Searches at the Tevatron
We discuss some of the latest results from supersymmetry searches at the
Tevatron
| hep-ex | cs.MA cs.SY math.OC |
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Query:
Quantum Many-Body Scars and Space-Time Crystalline Order from Magnon
Condensation | cond-mat.str-el cond-mat.quant-gas cond-mat.stat-mech quant-ph | q-bio.TO math.OC stat.ML |
Instruct:
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Query:
Matching gluon scattering amplitudes and Wilson loops in off-shell
regularization
We construct a regularization for light-like polygonal Wilson loops in ${\cal
N}=4$ SYM, which matches them to the off-shell MHV gluon scattering amplitudes.
Explicit calculations are performed for the 1-loop four gluon case. The off
light cone extrapolation has to be based on the local supersymmetric Wilson
loop. The observed matching concerns Feynman gauge. Furthermore, the leading
infrared divergent term is shown to be gauge parameter independent on 1-loop
level.
| hep-th | cs.CL cs.AI cs.IR cs.SE |
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Query:
Equilibrium Statistical Ensembles and Structure of the Entropy
Functional in Generalized Quantum Dynamics | hep-th | cs.LG cs.AI cs.IR cs.NE |
Instruct:
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Query:
General-mass treatment for deep inelastic scattering at two-loop
accuracy
We present a next-to-next-to-leading order (NNLO) realization of a general
quark mass scheme (S-ACOT-$\chi$) in deep inelastic scattering and explore the
impact of NNLO terms on heavy-quark structure functions $F_{2,L}^{c}(x,Q)$. An
amended QCD factorization theorem for DIS is discussed that validates the
S-ACOT-$\chi$ scheme to all orders in the QCD coupling strength. As a new
feature, kinematical constraints on collinear production of heavy quarks that
are crucial near the heavy-quark threshold are included in the amended
factorization theorem. An algorithmic procedure is outlined for implementing
this scheme at NNLO by using mass-dependent and massless results from
literature. At two loops in QCD cut diagrams, the S-ACOT-$\chi$ scheme reduces
scale dependence of heavy-quark DIS cross sections as compared to the
fixed-flavor number scheme.
| hep-ph | cs.SD cs.GR cs.MM eess.AS eess.IV |
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Workplace Accidents and Self-Organized Criticality | physics.soc-ph | solv-int hep-th math-ph math.DS math.MP nlin.PS nlin.SI patt-sol |
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Query:
Intrinsic Roughening and Phase Condensation in Strongly Interacting
Systems
Most of our current understanding of phase separation is based on ideas that
disregard correlations between constituents. Here we illuminate unexpected
effects of correlations on the structure and thermodynamics of interfaces and
in turn phase separation, which are decisive in systems with strong
interactions. Evaluating the continuum limit of the Ising model on the
Bethe-Guggenheim level we develop a Cahn-Hilliard theory that takes into
account pair correlations. These are shown to cause an intrinsic roughening of
interfaces at interaction strengths near and above the thermal energy, which is
corroborated in the Ising model. Roughening is a result of correlations
stabilizing large-scale inhomogeneities at sufficiently strong coupling, and is
shown to have profound implications for nucleation phenomena. The widely
adopted Flory-Huggins theory in turn predicts an unphysical behavior already at
moderate interactions. We discuss the biological relevance of our results in
the context of phase condensation of strongly interacting methyl-accepting
chemotaxis proteins in bacterial membranes. Our results identify pair
correlations as an essential determinant of interfaces and condensates in the
strong interaction limit that so far seems to have been overlooked.
| cond-mat.stat-mech cond-mat.soft physics.bio-ph physics.chem-ph | cs.PF astro-ph.IM cs.DC physics.data-an |
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Identifying Direct Collapse Black Hole Seeds through their Small Host
Galaxies | astro-ph.GA | cs.NE cs.CV cs.HC cs.RO |
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Query:
Quantum Chaos: Reduced Density Matrix Fluctuations in Coupled Systems
Following a recent work (briefly reviewed below) we consider temporal
fluctuations in the reduced density matrix elements for a coupled system
involving a pair of kicked rotors as also one made up of a pair of Harper
Hamiltonians. These dynamical fluctuations are found to constitute a reliable
indicator of the degree of chaos in the quantum dynamics, and are related to
stationary features like the eigenvalue and eigenvector distributions of the
system under consideration. A brief comparison is made with the evolution of
the reduced distribution function in the classical phase space.
| quant-ph | stat.CO cs.MS cs.SE |
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The Fraction of Quiescent Massive Galaxies in the Early Universe | astro-ph.GA astro-ph.CO | solv-int gr-qc nlin.SI |
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Extensive X-ray variability studies of NGC 7314 using long XMM-Newton
observations
We present a detailed X-ray variability study of the low mass Active Galactic
Nuclei (AGN) NGC 7314 using the two newly obtained XMM-Newton observations
($140$ and $130$ ks), together with two archival data sets of shorter duration
($45$ and $84$ ks). The relationship between the X-ray variability
characteristics and other physical source properties (such as the black hole
mass) are still relatively poorly defined, especially for low-mass AGN. We
perform a new, fully analytical, power spectral density (PSD) model analysis
method, which will be described in detail in a forthcoming paper, that takes
into consideration the spectral distortions, caused by red-noise leak. We find
that the PSD in the $0.5-10$ keV energy range, can be represented by a bending
power-law with a bend around $6.7\times10^{-5}$ Hz, having a slope of $0.51$
and $1.99$ below and above the bend, respectively. Adding our bend time-scale
estimate, to an already published ensemble of estimates from several AGN,
supports the idea that the bend time-scale depends linearly only on the black
hole mass and not on the bolometric luminosity. Moreover, we find that as the
energy range increases, the PSD normalization increases and there is a hint
that simultaneously the high frequency slope becomes steeper. Finally, the
X-ray time-lag spectrum of NGC 7314 shows some very weak signatures of
relativistic reflection, and the energy resolved time-lag spectrum, for
frequencies around $3\times10^{-4}$ Hz, shows no signatures of X-ray
reverberation. We show that the previous claim about ks time-delays in this
source, is simply an artefact induced by the minuscule number of points
entering during the time-lag estimation in the low frequency part of the
time-lag spectrum (i.e. below $10^{-4}$ Hz).
| astro-ph.HE astro-ph.CO astro-ph.GA | math.HO math.MG math.NT |