Inflaton Condensate Fragmentation: Analytical Conditions and Application to α-Attractor Models

Kim, Jinsu and McDonald, John (2017) Inflaton Condensate Fragmentation: Analytical Conditions and Application to α-Attractor Models. Physical Review D, 95 (12). ISSN 2470-0010

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Abstract

We study the stability of an inflaton condensate in the presence of attractive inflaton self-interactions, in order to determine analytical conditions on the self-interaction couplings under which the condensate undergoes fragmentation. As an application of our results, we consider the stability of the inflaton condensate in alpha-attractor inflation. We show that the stability of the condensate depends upon the value of a. For the T-model with n = 1, we find that it is unstable for alpha less than or similar to 10(-4). In this case it is expected that inflation will be followed by an oscillon-dominated era.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
Additional Information:
© 2017 American Physical Society
ID Code:
87320
Deposited By:
Deposited On:
06 Oct 2017 19:32
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Nov 2020 04:48