Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Aspects of the thermal phase transition of QCD with small chemical
  potential   We propose a new method to investigate the thermal properties of QCD with a
small chemical potential $(\mu)$. The derivatives of the phase transition point
with respect to $\mu$ are computed for 2 flavors of p4-improved staggered
fermions. We moreover comment on the complex phase of the fermion determinant
in finite-density QCD.

15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat