Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Viscous cosmologies in scalar-tensor theories for Kasner type metrics   In a viscous Bianchi type I metric of the Kasner form, it is well known that
it is not possible to describe an anisotropic physical model of the universe,
which satisfies the second law of thermodynamics and the dominant energy
condition (DEC) in Einstein's theory of gravity. We examine this problem in
scalar-tensor theories of gravity. In this theory we show that it is possible
to describe the growth of entropy, keeping the thermodynamics and the dominant
energy condition.

27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg