Generalized Chaplygin gas model, supernovae and cosmic topology
General Relativity and Quantum Cosmology
2008-11-26 v2 Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
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 parameter of the GCG model but does not lift the degeneracy of the parameter.
Keywords
Cite
@article{arxiv.gr-qc/0512158,
title = {Generalized Chaplygin gas model, supernovae and cosmic topology},
author = {M. C. Bento and O. Bertolami and M. J. Rebouças and P. T. Silva},
journal= {arXiv preprint arXiv:gr-qc/0512158},
year = {2008}
}
Comments
Revtex 4, 8 pages, 10 figures, 1 table; version to match the published one