Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Warm inflation with back - reaction: a stochastic approach   I study a stochastic approach for warm inflation considering back - reaction
of the metric with the fluctuations of matter field. This formalism takes into
account the local inhomogeneities fo the spacetime in a globally flat Friedmann
- Robertson - Walker metric. The stochastic equations for the fluctuations of
the matter field and the metric are obtained. Finally, the dynamics for the
amplitude of these fluctuations in a power - law expansion for the universe are
examined.

28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex