Decoherence in the cosmic background radiation

Autor:	Franco, Mariano, Calzetta, Esteban
Rok vydání:	2011
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Cosmology and Extragalactic Astrophysics
Zdroj:	Class.Quant.Grav.28:145024,2011
Druh dokumentu:	Working Paper
DOI:	10.1088/0264-9381/28/14/145024
Popis:	In this paper we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent superposition of two states corresponding to different CBR temperatures. Such observations are sensitive to scalar primordial fluctuations but insensitive to tensor fluctuations, which are therefore converted into an environment for the former. Even for a free inflaton field minimally coupled to gravity, scalar-tensor interactions induce enough decoherence among histories of the scalar fluctuations as to render them classical under any realistic probe of their amplitudes. Comment: 15 pages, accepted to be published in Classical and Quantum Gravity
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1103.0188 Zobrazit plný text záznamu View this record from Arxiv