Standard Cosmology Delayed

Autor:	Choudhury, Debajyoti, Ghoshal, Debashis, Sen, Anjan Ananda
Rok vydání:	2011
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1088/1475-7516/2012/02/046
Popis:	The introduction of a delay in the Friedmann equation of cosmological evolution is shown to result in the very early universe undergoing the necessary accelerated expansion in the usual radiation (or matter) dominated phase. Occurring even without a violation of the strong energy condition, this expansion slows down naturally to go over to the decelerated phase, namely the standard Hubble expansion. This may obviate the need for a scalar field driven inflationary epoch. Comment: 12 pages, 3 figures, Revised with more elaborate discussions. Accepted for publication in JCAP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1106.6231 Zobrazit plný text záznamu View this record from Arxiv