Journal
PHYSICAL REVIEW D
Volume 104, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.123545
Keywords
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Funding
- JSPS KAKENHI [JP17K14278, JP17H02875, JP18H05542, JP20H01894]
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A generalized superconformal model was studied, leading to a subcritical regime of D-term hybrid inflation. The dynamics of the inflaton-waterfall field resulted in various types of inflaton potential, with the tensor-to-scalar ratio ranging from 10^(-4) to 0.1.
We study a generalized superconformal model that gives rise to a subcritical regime of D-term hybrid inflation. Exhibiting the model both in a Jordan frame and in the Einstein frame, the effective potential of the subcritical regime is derived in the Einstein frame. It turns out that the inflaton-waterfall field dynamics leads to various types of inflaton potential. Consequently, the tensor-to-scalar ratio is found to range from 10(-4) (10(-3)) to 0.1 for getting 60 (50) e-folds before the end of inflation.
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