Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamics of nuclear condensates and phase transitions in white
  dwarfs   We study the thermodynamics of helium at densities relevant for white dwarf
physics. We find evidence that, as the temperature is increased, there is first
a first order transition between two superconducting phases followed by a
second order transition to the normal state. These transitions occur, for
realistic densities, at temperatures below the crystallization temperature and
the crystalline state is likely to remain as the true ground state of the
system. The calculations are performed with a screening but non-dynamical
electron background and we comment on the impact of this and other
approximations to our result.

31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn