Generalized Chaplygin gas model, supernovae, and cosmic topology

2005/12/31 by M. C. Bento, Orfeu Bertolami, O. Bertolami +2 · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Gamma-ray bursts and supernovae #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.73.043504

published as Phys.Rev.D73:043504,2006 · Revtex 4, 8 pages, 10 figures, 1 table; version to match the published one

openalex publication_date 2006/02/07 · arxiv created 2006/04/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this work we study to which extent the knowledge of spatial topology may place constraints on the parameters of the generalized Chaplygin gas (GCG) model for unification of dark energy and dark matter. By using both the Poincar'e dodecahedral and binary octahedral spaces as the observable spatial topologies, we examine the current type Ia supernovae (SNe Ia) constraints on the GCG model parameters. We show that the knowledge of spatial topology does provide additional constraints on the A_s parameter of the GCG model but does not lift the degeneracy of the \ensuremathα parameter.

Citations

• Topological lensing in spherical spaces
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results

Cited by

• Circles-in-the-sky searches and observable cosmic topology in the inflationary limit
• Interacting New Generalized Chaplygin Gas
• Viscous dissipative Chaplygin gas dominated homogenous and isotropic cosmological models
• Perspectives in fundamental physics in space
• WMAP five-year data constraints on the unified model of dark energy and dark matter
• Variable G Corrections to Statefinder Parameters of Dark Energy