Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modified Friedmann-Leme\^{\i}tre equation for dilaton-spin dark matter
  in Weyl-Cartan space   It is proposed to consider dark matter as a perfect dilaton-spin fluid (with
particles endowed with intrinsic spin and dilaton charge) in the framework of a
gravitational theory with a Weyl-Cartan geometrical structure. The modified
Friedmann-Lema\^{\i}tre equation (with a cosmological term) is obtained for the
homogeneous and isotropic Universe filled with the dilaton-spin dark matter. On
the basis of this equation, we develop a nonsingular cosmological model
starting from an inflation-like stage (for super-stiff equation of state),
passing radiation-dominated and matter-dominated decelerating stages and
turning into a post-Friedmann accelerating era.

17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
3
The categories of this paper are: physics
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int