Generalized Chaplygin gas as a scheme for Unification of Dark Energy and Dark Matter
| dc.creator | Bento, M. C. | |
| dc.creator | Bertolami, O. | |
| dc.creator | Sen, A. A. | |
| dc.date | 2002-10-16 | |
| dc.date.accessioned | 2026-07-07T02:05:44Z | |
| dc.date.available | 2026-07-07T02:05:44Z | |
| dc.description | We study the cosmological scenario arising from the dynamics of a generalized Chaplygin gas. The equation of state of the system is given in terms of the energy density, $ρ$, and pressure, $p$, by the relationship $p = - A/ρ^α$, where $A$ is a positive constant and $0 < α\le 1$. The conditions under which homogeneity arises are discussed and it is shown that this equation of state describes a universe evolving from a phase dominated by non-relativistic matter to a phase dominated by a cosmological constant via an intermediate period where the effective equation of state is $p = αρ$. | |
| dc.description | 4 pages. Talk presented by O.B. at the XVIIIth IAP Colloquium "On the Nature of Dark Energy", Paris, July 2002 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0210375 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0210375 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/5192 | |
| dc.subject | Astrophysics | |
| dc.title | Generalized Chaplygin gas as a scheme for Unification of Dark Energy and Dark Matter | |
| dc.type | text |