Perturbative quantum damping of cosmological expansion

Autor:	Broda, Bogusław
Rok vydání:	2013
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
Zdroj:	Phys.Lett.B732:182-185,2014
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physletb.2014.03.048
Popis:	Perturbative quantum gravity in the framework of the Schwinger-Keldysh formalism is applied to compute lowest-order corrections to the actual expansion of the Universe described in terms of the spatially flat Friedman-Lematre-Robertson-Walker solution. The classical metric is approximated by a third order polynomial perturbation around the Minkowski metric. It is shown that the quantum contribution to the classical expansion, although extremely small, has damping properties (quantum friction), i.e. it slows down the expansion. Comment: 8 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1310.4308 Zobrazit plný text záznamu View this record from Arxiv