Generalized Chaplygin gas model, supernovae, and cosmic topology

• Type: Article in International Scientific Journal
• Date: 2006

Authors

bento, mc (Author) Other; bertolami, o (Author) Other; reboucas, mj (Author) Other; silva, pt (Author) Other

Journal

Title: Physical Review D

Vol. 73

ISSN: 2470-0010

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 47 Citations

Scopus - 51 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-NJT

DOI: 10.1103/physrevd.73.043504

Abstract (EN): 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 Poincare 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 alpha parameter.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8