Some impacts of quintessence models on cosmic structure formation
| dc.creator | Alimi, A. Fuzfa J. -M. | |
| dc.date | 2006-11-09 | |
| dc.date.accessioned | 2026-07-07T12:48:46Z | |
| dc.date.available | 2026-07-07T12:48:46Z | |
| dc.description | Some physical imprints of quintessence scalar fields on dark matter (DM) clustering are illustrated, and a comparison with the concordance model $ΛCDM$ is highlighted. First, we estimate the cosmological parameters for two quintessence models, based on scalar fields rolling down the Ratra-Peebles or Sugra potential, by a statistical analysis of the Hubble diagram of type Ia supernovae. Then, the effect of these realistic dark energy models on large-scale DM clustering is established through N-body simulations. Various effects like large-scale distribution of DM, cluster mass function and halos internal velocities are illustrated. It is found that realistic dark energy models lead to quite different DM clustering, due to a combination of the variation of the equation of state and differences in the cosmological parameters, even at $z=0$. This conclusion contradicts other works in the recent litterature and the importance of considering more realistic models in studying the impact of quintessence on structure formation is highlighted. | |
| dc.description | 9 pages, 5 figures, in "Albert Einstein Century International Conference", Paris, 18-22 July 2005, AIP Proceedings Conference 861, Pages 858-866, Edited by Jean-Michel ALIMI & Andre FUZFA | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0611284 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0611284 | |
| dc.identifier | AIP Conf.Proc.861:858-866,2006 | |
| dc.identifier | doi:10.1063/1.2399670 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/222172 | |
| dc.subject | Astrophysics | |
| dc.title | Some impacts of quintessence models on cosmic structure formation | |
| dc.type | text |