Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some cosmological solutions in Einstein-Chern-Simons gravity   In this paper we find new solutions for the so called Einstein-Chern-Simons
Friedmann-Robertson-Walker field equations studied in refs. (Phys. Rev. D 84
(2011) 063506, Eur. Phys. J. C 74 (2014) 3087). We consider three cases:(i) in
the first case we find some solutions of the five-dimensional ChS-FRW field
equations when the $h^a$ field is a perfect fluid that obeys a barotropic
equation of state; (ii) in the second case we study the solutions, for the
cases $\gamma =1/2,\ 3/4$, when the $h^a$ field is a five dimensional
politropic fluid that obeys the equation $P^{(h)}=\omega ^{(h)}\rho ^{(h)\gamma
}$; (iii) in the third case we find the scale factor and the state parameter
$\omega (t)$ when the $h^a$ field is a variable modified Chaplygin gas.
  We consider also a space-time metric which contains as a subspace to the
usual four-dimensional FRW and then we study the same three cases considered in
the five-dimensional, namely when (i) the $h^a$ field is a perfect fluid, (ii)
the $h^a$ field is a five dimensional politropic fluid and (iii) the $h^a$
field is a variable modified Chaplygin gas.

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The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th