Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On String Gas Cosmology at Finite Temperature   Within an adiabatic approximation, thermodynamical equilibrium and a small,
nine dimensional, toroidal universe as initial conditions, we analyze the
evolution of the dimensions in two different regimes: (i) the Hagedorn regime,
with a single scale factor with a nearly constant time evolution (ii) an
almost-radiation dominated regime, including the leading corrections due to the
lightest Kaluza Klein and winding modes, in which for some initial conditions
the large dimensions continue to expand and the small ones remain small.

3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph