Ultra slow-roll inflation demystified

Dimopoulos, Konstantinos (2017) Ultra slow-roll inflation demystified. Physics Letters B, 775. pp. 262-265. ISSN 0370-2693

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Abstract

Abstract Ultra-slow-roll (USR) inflation is a new mode of inflation which corresponds to the occasions when the inflaton field must traverse an extremely flat part of the scalar potential, when the usual slow-roll (SR) fails. We investigate USR and obtain an estimate for how long it lasts, given the initial kinetic density of the inflaton. We also find that, if the initial kinetic density is small enough, USR can be avoided and the usual SR treatment is valid. This has important implications for inflection-point inflation.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
88552
Deposited By:
Deposited On:
03 Nov 2017 11:44
Refereed?:
Yes
Published?:
Published
Last Modified:
25 Feb 2020 08:05