Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamics of electron-hole liquids in graphene   The impact of renormalization of the electron spectrum on the chemical
potential, heat capacity, and oscillating magnetic moment is studied. The cases
of low and high temperatures are considered. At low temperatures, doped
graphene behaves as the usual Fermi liquids with the power temperature laws for
thermodynamic properties. However, at high temperatures and relatively low
carrier concentrations, it exhibits the collective electron-holes features: the
chemical potential tends to its value in the undoped case going with the
temperature to the charge neutrality point. Simultaneously, the electron
contribution into the heat capacity tends to the constant value, as in the case
of the Boltzmann statistics.

30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess