Generalized Chaplygin gas as geometrical dark energy

Details Generalized Chaplygin gas as geometrical dark energy Generalized Chaplygin gas as geometrical dark energy

2007-10-14

arxiv.org/abs/0710.2666v2

Phys.Rev.D76:104009,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 3 figures, to appear in PRD

Scientific paper

10.1103/PhysRevD.76.104009

The generalized Chaplygin gas provides an interesting candidate for the present accelerated expansion of the universe. We explore a geometrical explanation for the generalized Chaplygin gas within the context of brane world theories where matter fields are confined to the brane by means of the action of a confining potential. We obtain the modified Friedmann equations, deceleration parameter and age of the universe in this scenario and show that they are consistent with the present observational data.

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