Quintessence dissipative superattractor cosmology
We investigate the simplest quintessence dissipative dark matter attractor cosmology characterized by a constant quintessence baryotropic index and a power--law expansion. We show a class of accelerated coincidence--solving attractor solutions converging to this asymptotic behavior. Despite its simp...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2001 |
| Country: | Argentina |
| Institution: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repository: | CONICET Digital (CONICET) |
| Language: | English |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/79241 |
| Online Access: | http://hdl.handle.net/11336/79241 |
| Access Level: | Open access |
| Keyword: | dark matter power-law expansion supernovae luminosity observations https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Summary: | We investigate the simplest quintessence dissipative dark matter attractor cosmology characterized by a constant quintessence baryotropic index and a power--law expansion. We show a class of accelerated coincidence--solving attractor solutions converging to this asymptotic behavior. Despite its simplicity, such a ``superattractor´´ regime provides a model of the recent universe that also exhibits an excellent fit to supernovae luminosity observations and no age conflict. Our best fit gives $alpha=1.71pm 0.29$ for the power-law exponent. We calculate for this regime the evolution of density and entropy perturbations. |
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