Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral dynamics and pion properties at finite temperature and isospin
  chemical potential   The thermal and density corrections, in terms of the isospin chemical
potential $\mui $, to the mass of the pions, the decay constant and different
condensates are studied in the framework of the SU(2) low energy effective
chiral lagrangian at finite temperature in the two phases: The first phase
$|\mui|<m$ and the second phase $|\mui|>m$, being $m$ the tree-level pion mass.
As a function of temperature for $\mui =0$, the mass remains quite stable,
starting to grow for very high values of $T$, confirming previous results.
However, there are interesting corrections to the mass when both effects
(temperature and chemical potential) are simultaneously present. At zero
temperature the $\pi ^{\pm}$ should condense when $\mui = \pm m_{\pi}$. At
finite $T$, the condensed pion acquires a thermal mass in such a way that a
mixture, like in a superfluid, of a condensed and normal phase appears.

34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph