Generalized Chaplygin gas as geometrical dark energy

Abstract

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.

11 pages, 3 figures, to appear in PRD

References in corpus (3)

• Anisotropic brane gravity with a confining potential
• Constraints on alternative models to dark energy
• Gauss-Bonnet brane gravity with a confining potential

Cited by in corpus (3)

• Viscous dissipative Chaplygin gas dominated homogenous and isotropic cosmological models
• Quantum FRW cosmological solutions in the presence of Chaplygin gas and perfect fluid
• Role of Chaplygin gas as geometrical dark energy in anisotropic brane gravity