Symmetries of Vector Perturbations during the de Sitter Epoch

Autor:	Biagetti, Matteo, Kehagias, Alex, Morgante, Enrico, Perrier, Hideki, Riotto, Antonio
Rok vydání:	2013
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1088/1475-7516/2013/07/030
Popis:	We analyze the class of models where a suitable coupling between the inflaton field and the vector field gives rise to scale-invariant vector perturbations. We exploit the fact that the de Sitter isometry group acts as conformal group on the three-dimensional Euclidean space for the super-Hubble fluctuations in order to characterize the correlators involving the inflaton and the vector fields. Comment: v2: References added, last paragraph of section 4 clarified. Submitted to JCAP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1304.7785 Zobrazit plný text záznamu View this record from Arxiv