Role of Chaplygin gas as geometrical dark energy in anisotropic brane gravity

Details Role of Chaplygin gas as geometrical dark energy in anisotropic brane gravity Role of Chaplygin gas as geometrical dark energy in anisotropic brane gravity

2008-09-03

arxiv.org/abs/0809.0546v1

Phys.Rev.D78:064007,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, 4 figures

Scientific paper

10.1103/PhysRevD.78.064007

We consider an anisotropic brane-world model with Bianchi type I and V geometry, without mirror symmetry or any form of junction conditions. The generalized Chaplygin gas, which interpolates between a high density relativistic era and a non-relativistic matter phase, is a popular candidate for the present accelerated expansion of the universe. Considering the generalized Chaplygin gas as a geometrical dark energy, we obtain the general solutions in an exact parametric form for both Bianchi type I and V space-times. Finally, we study the behavior of the observationally important parameters such as the shear, anisotropic and deceleration parameter in this model.

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