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Generalized Chaplygin gas model, supernovae, and cosmic topology

Generalized Chaplygin gas model, supernovae, and cosmic topology 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 Poincaré 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 α parameter. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Generalized Chaplygin gas model, supernovae, and cosmic topology

8 pages

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References (59)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2006 The American Physical Society
ISSN
1550-2368
DOI
10.1103/PhysRevD.73.043504
Publisher site
See Article on Publisher Site

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 Poincaré 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 α parameter.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Feb 15, 2006

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