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

2008/09/02 by Malihe Heydari-Fard, Hamid Reza Sepangi, Hamid R. Sepangi
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #gr-qc

paper · pdf · doi:10.1103/physrevd.78.064007

published as Phys.Rev.D78:064007,2008 · 12 pages, 4 figures

openalex publication_date 2008/09/02 · arxiv created 2008/09/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider an anisotropic braneworld 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 nonrelativistic 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 parameters in this model.

Citations