Generalized Chaplygin gas as geometrical dark energy

2007/10/31 by M. Heydari-Fard, Mohaddese Heydari-Fard, Hamid Reza Sepangi +1 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #gr-qc

paper · pdf · doi:10.1103/physrevd.76.104009

published as Phys.Rev.D76:104009,2007 · 11 pages, 3 figures, to appear in PRD

openalex publication_date 2007/11/07 · arxiv created 2007/11/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

Citations

• Large Mass Hierarchy from a Small Extra Dimension
• Accelerating universe in brane gravity with a confining potential

Cited by

• Role of Chaplygin gas as geometrical dark energy in anisotropic brane gravity
• Viscous dissipative Chaplygin gas dominated homogenous and isotropic cosmological models
• Localization of gravity in brane world with arbitrary extra dimensions