Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Isospin Chemical potential and temperature effects in the Linear Sigma
  Model   In this letter we explore the temperature and isospin chemical potential
($\mu_I$) dependence of the vacuum structure and the meson masses in the linear
sigma model, at the one loop level. The sigma meson mass grows steadily with
temperature. This behavior does not agree with previous mean field
calculations. For the pion our results show the same behavior as the mean field
approach. The stability of the vacuum has a very soft dependence on $\mu_I$
since this is a second order effect in the tadpole diagrams.

17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat