FRW Cosmology in F(R,T) gravity

Myrzakulov, Ratbay

doi:10.1140/epjc/s10052-012-2203-y

FRW Cosmology in F(R,T) gravity

Jul, 2012

12 pages

Published in:

Eur.Phys.J.C 72 (2012) 2203

Published: Nov 7, 2012

e-Print:

1207.1039 [gr-qc]

DOI:

10.1140/epjc/s10052-012-2203-y

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Abstract: (arXiv)

In this paper, we consider a theory of gravity with a metric-dependent torsion namely the

F(R,T)

gravity, where

R

is the curvature scalar and

T

is the torsion scalar. We study a geometric root of such theory. In particular we give the derivation of the model from the geometrical point of view. Then we present the more general form of

F(R,T)

gravity with two arbitrary functions and give some of its particular cases. In particular, the usual

F(R)

and

F(T)

gravity theories are the particular cases of the

F(R,T)

gravity. In the cosmological context, we find that our new gravitational theory can describes the accelerated expansion of the universe.

Note:

14 pages

expansion: acceleration
gravitation: model
torsion
cosmological model
space-time: Robertson-Walker

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