What is the dark energy paradigm? Auteur(s): Polarski D.
Conférence invité: Grassmannian Conference in Fundamental Cosmology (, PL, 2009-09-14) Ref HAL: hal-00632710_v1 Exporter : BibTex | endNote Résumé: The present accelerated expansion of the universe is a major challenge for cosmology. Dark Energy models aim to explain this unconventional expansion. We have at the present time a large variety of models which are conceptually very different. We review here some of them, especially those based on a modification of the laws of gravity. Future high precision observations probing both the background and the perturbations will significantly reduce the class of viable models. |