Power Spectrum of Inflationary Attractors

Autor:	Broy, Benedict J., Roest, Diederik, Westphal, Alexander
Rok vydání:	2014
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj:	Physical Review D, vol. 91, no. 2, p. 23514, 2015
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.91.023514
Popis:	Inflationary attractors predict the spectral index and tensor-to-scalar ratio to take specific values that are consistent with Planck. An example is the universal attractor for models with a generalised non-minimal coupling, leading to Starobinsky inflation. In this paper we demonstrate that it also predicts a specific relation between the amplitude of the power spectrum and the number of e-folds. The length and height of the inflationary plateau are related via the non-minimal coupling: in a wide variety of examples, the observed power normalisation leads to at least 55 flat e-foldings. Prior to this phase, the inflationary predictions vary and can account for the observational indications of power loss at large angular scales. Comment: 5 pages, 1 figure; v2: added refs; to appear in PRD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1408.5904 Zobrazit plný text záznamu View this record from Arxiv