Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Complex Langevin Simulation of a Random Matrix Model at Nonzero Chemical
  Potential   In this paper we test the complex Langevin algorithm for numerical
simulations of a random matrix model of QCD with a first order phase transition
to a phase of finite baryon density. We observe that a naive implementation of
the algorithm leads to phase quenched results, which were also derived
analytically in this article. We test several fixes for the convergence issues
of the algorithm, in particular the method of gauge cooling, the shifted
representation, the deformation technique and reweighted complex Langevin, but
only the latter method reproduces the correct analytical results in the region
where the quark mass is inside the domain of the eigenvalues. In order to shed
more light on the issues of the methods we also apply them to a similar random
matrix model with a milder sign problem and no phase transition, and in that
case gauge cooling cooling solves the convergence problems as was shown before
in the literature.

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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: math