Astrophysics Computer Science Condensed Matter Economics Electrical Engineering and Systems Science General Relativity and Quantum Cosmology High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Phenomenology High Energy Physics - Theory Mathematical Physics Mathematics Nonlinear Sciences Nuclear Experiment Nuclear Theory Other Physics Quantitative Biology Quantitative Finance Quantum Physics Statistics
---
language: en
license: apache-2.0
tags:
- arxiv
- topic-classification
- distilbert
widget:
- text: "Title: The Design of Radio Telescope Array Configurations using Multiobjective\n\
    \  Optimization: Imaging Performance versus Cable Length\nAbstract: The next generation\
    \ of radio telescope interferometric arrays requires\ncareful design of the array\
    \ configuration to optimize the performance of the\noverall system. We have developed\
    \ a framework, based on a genetic algorithm,\nfor rapid exploration and optimization\
    \ of the objective space pertaining to\nmultiple objectives. We have evaluated\
    \ a large space of possible designs for\n27-, 60-, 100-, and 160-station arrays.\
    \ The 27-station optimizations can be\ncompared to the well-known VLA case, and\
    \ the larger array designs apply to\narrays currently under design such as LOFAR,\
    \ ATA, and the SKA. In the initial\nimplementation of our framework we evaluate\
    \ designs with respect to two\nmetrics, array imaging performance and the length\
    \ of cable necessary to connect\nthe stations. Imaging performance is measured\
    \ by the degree to which the\nsampling of the uv plane is uniform. For the larger\
    \ arrays we find that\nwell-known geometric designs perform well and occupy the\
    \ Pareto front of\noptimum solutions. For the 27-element case we find designs,\
    \ combining features\nof the well-known designs, that are more optimal as measured\
    \ by these two\nmetrics. The results obtained by the multiobjective genetic optimization\
    \ are\ncorroborated by simulated annealing, which also reveals the role of entropy\
    \ in\narray optimization. Our framework is general, and may be applied to other\n\
    design goals and issues, such as particular schemes for sampling the uv plane,\n\
    array robustness, and phased deployment of arrays.\nAuthors: Babak E. Cohanim,\
    \ Jacqueline N. Hewitt, Olivier de Weck"
- text: "Title: Evidence for a Neutron Star in the non-pulsating massive X-ray binary\n\
    \  4U2206+54\nAbstract: We present an analysis of archival RXTE and BeppoSAX data\
    \ of the X-ray source\n4U2206+54 . For the first time, high energy data (> 30\
    \ kev) are analyzed for\nthis source. The data are well described by comptonization\
    \ models (CompTT and\nBMC) in which seed photons with temperatures between 1.1\
    \ kev and 1.5 kev are\ncomptonized by a hot plasma at 50 kev thereby producing\
    \ a hard tail which\nextends up to, at least, 100 kev. We offer a new method of\
    \ identification of\nneutron star systems using a temperature - luminosity relation.\
    \ If a given\nX-ray source is characterized by a low bolometric luminosity and\
    \ a relatively\nhigh color blackbody temperature (>1 kev) it has necessarily to\
    \ be a neutron\nstar rather than a black hole. From these arguments it is shown\
    \ that the area\nof the soft photon source must be small (r ~ 1 km) and that the\
    \ accretion disk,\nif present, must be truncated very far from the compact object.\
    \ Here we report\non the possible existence of a cyclotron line around 30 kev.\
    \ The presence of a\nneutron star in the system is strongly favored by the available\
    \ data.\nAuthors: J. M. Torrej\xF3n, I. Kreykenbohm, A. Orr, L. Titarchuk, I.\
    \ Negueruela"
- text: "Title: Solving the Schrodinger Equation for a Quantum Well\n  with a Non-Uniform\
    \ Potential\nAbstract: We present a numerical solution to the Schrodinger equation\
    \ for a\nquantum well with a non-uniform potential. The potential is a Gaussian\n\
    with a non-uniform distribution of energies. The solution is a solution to the\n\
    Schrodinger equation with a non-uniform potential. The solution is a\nnon-uniform\
    \ solution to the Schrodinger equation with a non-uniform potential.\nAuthors:\
    \ George K. Kostopoulos, John A. Kostopoulos, and John C. Kostopoulos"
- text: "Title: Inverting Black-Scholes Model for Option Pricing\n  with a Non-Uniformly\
    \ Distributed Risk\nAbstract: We present a numerical solution to the Black-Scholes\
    \ model for\noption pricing with a non-uniformly distributed risk. The solution\
    \ is a\nnon-uniform solution to the Black-Scholes model with a non-uniformly\n\
    distributed risk. The solution is a non-uniform solution to the\nBlack-Scholes\
    \ model with a non-uniformly distributed risk.\nAuthors: Z. Starosov, L. Randhawa"

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# DistilBERT on ArXiv

This model was developed to predict the top-level category of a paper, given the
paper's abstract, title, and list of authors. It was trained over a subset of
data pulled from the ArXiv API.

