Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Taylor- and fugacity expansion for the effective Z(3) spin model of QCD
  at finite density   Series expansions in the chemical potential mu are studied for an effective
theory of QCD which has a flux representation where the complex action is
overcome. In particular we consider fugacity series, Taylor expansion and a
modified Taylor expansion and compare the outcome of these series to the
reference results from a Monte Carlo simulation in the flux representation
where arbitrary mu is accessible. It is shown that for most parameter values
the fugacity expansion gives the best approximation to the data from the flux
simulation, followed by our newly proposed modified Taylor expansion. For the
conventional Taylor expansion we find that the results coincide with the flux
data only for very small mu.

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The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
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The categories of this paper are: solv-int
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin