3D gravity and non-linear cosmology

Details 3D gravity and non-linear cosmology 3D gravity and non-linear cosmology

2005-10-11

arxiv.org/abs/gr-qc/0510055v1

Mod.Phys.Lett. A21 (2006) 445-450

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, to appear in Mod. Phys. Lett

Scientific paper

10.1142/S0217732306018974

By the inclusion of an additional term, non-linear in the scalar curvature $R$, it is tested if dark energy could rise as a geometrical effect in 3D gravitational formulations. We investigate a cosmological fluid obeying a non-polytropic equation of state (the van der Waals equation) that is used to construct the energy-momentum tensor of the sources, representing the hypothetical inflaton in gravitational interaction with a matter contribution. Following the evolution in time of the scale factor, its acceleration, and the energy densities of constituents it is possible to construct the description of an inflationary 3D universe, followed by a matter dominated era. For later times it is verified that, under certain conditions, the non-linear term in $R$ can generate the old 3D universe in accelerated expansion, where the ordinary matter is represented by the barotropic limit of the van der Waals constituent.

Affiliated with

Also associated with

No associations

Rating

3D gravity and non-linear cosmology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with 3D gravity and non-linear cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3D gravity and non-linear cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-48569