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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Inflaton Condensate Fragmentation: Analytical Conditions and Application to α-Attractor Models
AU - Kim, Jinsu
AU - McDonald, John
N1 - © 2017 American Physical Society
PY - 2017/6/30
Y1 - 2017/6/30
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevD.95.123537
DO - 10.1103/PhysRevD.95.123537
M3 - Journal article
VL - 95
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 12
M1 - 123537
ER -