118340710
ABJ triality: from higher spin fields to strings
We demonstrate that a supersymmetric and parity violating version of Vasiliev’s higher spin gauge theory in AdS4 admits boundary conditions that preserve or 6 supersymmetries. In particular, we argue that the Vasiliev theory with U(M) Chan–Paton and boundary condition is holographically dual to the 2+1 dimensional U(N)k × U(M)−k ABJ theory in the limit of large N, k and finite M. In this system all bulk higher spin fields transform in the adjoint of the U(M) gauge group, whose bulk t’Hooft coupling is M/N. Analysis of boundary conditions in Vasiliev theory allows us to determine exact relations between the parity breaking phase of Vasiliev theory and the coefficients of two and three point functions in Chern–Simons vector models at large N. Our picture suggests that the supersymmetric Vasiliev theory can be obtained as a limit of type IIA string theory in AdS, and that the non-Abelian Vasiliev theory at strong bulk ’t Hooft coupling smoothly turn into a string field theory. The fundamental string is a singlet bound state of Vasiliev’s higher spin particles held together by U(M) gauge interactions. This is illustrated by the thermal partition function of free ABJ theory on a two sphere at large M and N even in the analytically tractable free limit. In this system the traces or strings of the low temperature phase break up into their Vasiliev particulate constituents at a U(M) deconfinement phase transition of order unity. At a higher temperature of order Vasiliev’s higher spin fields themselves break up into more elementary constituents at a U(N) deconfinement temperature, in a process described in the bulk as black hole nucleation.This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical devoted to ‘Higher spin theories and holography’.
119105715
A semilocal holographic minimal model
We present a conjecture on the complete spectrum of single-trace operators in the infinite $N$ limit of ${W}_{N}$ minimal model and evidence for the conjecture. We further propose that the holographic dual of ${W}_{N}$ minimal model in the 't Hooft limit is an unusual ``semilocal'' higher spin gauge theory on ${\mathrm{AdS}}_{3}\ifmmode\times\else\texttimes\fi{}{S}^{1}$. At each point on the ${S}^{1}$ lives a copy of three-dimensional Vasiliev theory, that contains an infinite tower of higher spin gauge fields coupled to a single massive complex scalar propagating in ${\mathrm{AdS}}_{3}$. The Vasiliev theories at different points on the ${S}^{1}$ are correlated only through the ${\mathrm{AdS}}_{3}$ boundary conditions on the massive scalars. All but one single tower of higher spin symmetries are broken by the boundary conditions.
118696108
Non-Minimal Higher-Spin DS4/CFT3
We conjecture that the level k U(N) Chern-Simons theory coupled to free anticommuting scalar matter in the fundamental is dual to non-minmal higher-spin Vasiliev gravity in dS4 with parity-violating phase \theta0 = \pi N/2k and Neumann boundary conditions for the scalar. Related conjectures are made for fundamental commuting spinor matter and critical theories. This generalizes a recent conjecture relating the minimal Type A Vasiliev theory in dS4 to the Sp(N) model with fundamental real anti-commuting scalars.
122268800
The cryogenic dark matter search (CDMS-II) experiment - first results from the Soudan Mine
The CDMS collaboration has completed its first WIMP search run at the Soudan Underground Laboratory. This run consisted of operating 4 Ge and 2 Si ZIP detectors for 52.6 live days and yields a post-analysis WIMP exposure of 19.4 kg-d for recoil energies between 10-100 keV. Analysis of this data sets the world's lowest exclusion limits on the coherent WIMP-nucleon scalar cross-section for all WIMP masses above 15 GeV/c2.
121453674
Quasiparticle propagation in aluminum fins and tungsten TES dynamics in the CDMS ZIP detector
Abstract With the aim of improving the rejection of surface beta contamination on the CDMS ZIP detector, we have studied the effectiveness of our phonon pulse-shape discrimination by matching a Monte Carlo calculation to data from a 350 μ m long Al fin with W TESs (Transition-Edge Sensors) at both ends. From this fit, we determined the Al film diffusivity to be D Al = 0.010 ± 0.001 m 2 / s , the quasiparticle trapping length in the Al fin to be l trap = 180 ± 10 μ m , and the Al to W TES transmission to be f Al / W = 0.002 ± 0.001 .
118483093
Spectrum for heavy quarkonia and mixture of the relevant wave functions within the framework of Bethe-Salpeter equation
Considering the fact that some excited states of the heavy quarkonia (charmonium and bottomonium) are still missing in experimental observations and potential applications of the relevant wave functions of the bound states, we re-analyze the spectrum and the relevant wave functions of the heavy quarkonia within the framework of Bethe-Salpeter (B.S.) equation with a proper QCD-inspired kernel. Such a kernel for the heavy quarkonia, relating to potential of the non-relativistic quark model, is instantaneous, so we call the corresponding B.S. equation as BS-In equation throughout the paper. Particularly, a new way to solve the B.S. equation, which is different from the traditional ones, is proposed here, and with it not only the known spectrum for the heavy quarkonia is re-generated, but also an important issue is brought in, i.e., the obtained solutions of the equation ‘automatically’ include the ‘fine’, ‘hyperfine’ splittings and the wave function mixture, such as S-D wave mixing in JPC = 1−− states, P-F wave mixing in JPC = 2++ states for charmonium, bottomonium etc. It is pointed out that the best place to test the wave mixture probably is at Z-factory (e+e− collider running at Z-boson pole with extremely high luminosity).
22489858
A multichamber system for analyzing the outgassing, deposition, and associated optical degradation properties of materials in a vacuum.
We report on the camera materials test chamber, a multivessel apparatus that analyzes the outgassing consequences of candidate materials for use in the vacuum cryostat of a new telescope camera. The system measures the outgassing products and rates of samples of materials at different temperatures and collects films of outgassing products to measure the effects on light transmission in six optical bands. The design of the apparatus minimizes potential measurement errors introduced by background contamination.
110998320
Determination of the Tc distribution for 1000 Transition Edge Sensors
The ZIP detectors deployed in the CDMS II experiment utilize phonon sensors comprising W Transition Edge Sensors (TESs). In order to ensure uniform collection of the athermal phonon signal the TESs are dispersed uniformly on one side of a 1 cm thick, 3 inch diameter, disk. Each quadrant contains 1036 TESs connected in parallel to one series-array SQUID amplifier. The initial superconducting transition temperatures of these TESs tend to be too high for our requirements, and substantial gradients make the operation of the detectors difficult. Hence our implementation of Fe-56 ion implantation, as reported at the previous LTD meeting, to reduce in a controlled manner the transition temperature. However, the successful implementation of this ion-implantation scheme requires accurate knowledge of the initial transition temperature of each TES in a given quadrant. We report on our approaches and techniques employed to address the issue of determining the initial Tc distribution.