| Date de soumission: | 05-02-2019 |
|---|---|
| Année de Publication: | 2011 |
| Entité/Laboratoire | Autres Laboratoires |
| Document type : | Article |
| Discipline(s) : | Physique mathématique |
| Titre | Ruling out the Modified Chaplygin Gas cosmologies |
|---|---|
| Auteurs | Ogouyandjou Carlos [3], |
| Journal: | Physics Letters B |
| Catégorie Journal: | Internationale |
| Impact factor: | 4.254 |
| Volume Journal: | 694 |
| DOI: | doi:10.1016/j.physletb.2010.10.022 |
| Resume | The Modified Chaplygin Gas (MCG) model belongs to the class of a unified models of dark energy (DE) and dark matter (DM). It is characterized by an equation of state (EoS) p c = B ρ − A / ρ α , where the case B = 0 corresponds to the Generalized Chaplygin Gas (GCG) model. Using a perturbative analysis and power spectrum observational data we show that the MCG model is not a successful candidate for the cosmic medium unless B = 0. In this case, it reduces to the usual GCG model. |
| Mots clés | Dark energy Unified models Cosmology |
| Pages | 289 - 293 |
| Fichier |