On the growth of perturbations in interacting dark energy and dark matter fluids

Autor:	Koshelev, N. A.
Rok vydání:	2009
Předmět:	General Relativity and Quantum Cosmology
Zdroj:	Gen.Rel.Grav.43:1309-1321,2011
Druh dokumentu:	Working Paper
DOI:	10.1007/s10714-010-1113-2
Popis:	The covariant generalizations of the background dark sector coupling suggested in G. Mangano, G. Miele and V. Pettorino, Mod. Phys. Lett. A 18, 831 (2003) are considered. The evolution of perturbations is studied with detailed attention to interaction rate that is proportional to the product of dark matter and dark energy densities. It is shown that some classes of models with coupling of this type do not suffer from early time instabilities in strong coupling regime. Comment: 11 pages, 2 figures. v3: minor changes, typos fixed
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0912.0120 Zobrazit plný text záznamu View this record from Arxiv