Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Isothermal vs. isentropic description of protoneutron stars in the
  Brueckner-Bethe-Goldstone theory   We study the structure of hadronic protoneutron stars within the finite
temperature Brueckner-Bethe-Goldstone theoretical approach. Assuming
beta-equilibrated nuclear matter with nucleons and leptons in the stellar core,
with isothermal or isentropic profile, we show that particle populations and
equation of state are very similar. As far as the maximum mass is concerned, we
find that its value turns out to be almost independent on T, while a slight
decrease is observed in the isentropic case, due to the enhanced proton
fraction in the high density range.

20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat