Rights statement: © 2017 American Physical Society
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Final published version
Licence: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 123537 |
---|---|
<mark>Journal publication date</mark> | 30/06/2017 |
<mark>Journal</mark> | Physical Review D |
Issue number | 12 |
Volume | 95 |
Number of pages | 5 |
Publication Status | Published |
<mark>Original language</mark> | English |
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.