Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A dimensionally reduced expression for the QCD fermion determinant at
  finite temperature and chemical potential   A dimensionally reduced expression for the QCD fermion determinant at finite
temperature and chemical potential is derived which sheds light on the
determinant's dependence on these quantities. This is done via a partial zeta
regularisation, formally applying a general formula for the zeta-determinant of
a differential operator in one variable with operator-valued coefficients. The
resulting expression generalises the known one for the free fermion
determinant, obtained via Matsubara frequency summation, to the case of general
background gauge field; moreover there is no undetermined overall factor.
Rigorous versions of this result are obtained in a continuous time--lattice
space setting. The determinant expression reduces to a remarkably simple form
in the low temperature limit. A program for how to use this to obtain insight
into the QCD phase transition at zero temperature and nonzero density is
outlined.

5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
16
The categories of this paper are: stat
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: math
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin