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arXiv · 1901.01897

Warm (Pseudo)Scalar Inflation

Vahid. Kamali
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Abstract

In this note, we will introduce an action for warm inflation model with direct coupling between the pseudoscalar field and mass-less $SU(2)$ gauge fields. The potential of inflaton is protected against the thermal corrections in a thermal bath of gauge fields even with strong direct interaction between inflaton and light fields. The dissipation parameter of this model is approximately constant in the high-dissipative regime. In this regime, the model is compatible with observational data and non-Gaussianity is in order of Hubble slow-roll parameter $\frac{ε_ϕ}{1+Q}$ even in $f<M_p$ limit.

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Vahid. Kamali. 2019-01-07. Warm (Pseudo)Scalar Inflation. https://doi.org/10.1103/physrevd.100.043520

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