Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of Chemical Potential on Hadron Masses in the Phase Transition
  Region   We study the response of hadron masses with respect to chemical potential at
$\mu=0$. Our preliminary results of the pion channel show that $\partial
m/\partial \mu$ in the confinement phase is significantly larger than that in
the deconfinement phase, which is consistent with the chiral restoration.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math