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Paper   IPM / Physic / 15798
School of Physics
  Title:   Warm pseudoscalar inflation
  Author(s):  V. Kamali
  Status:   Published
  Journal: Phys. Rev. D
  Vol.:  100
  Year:  2019
  Pages:   043520
  Supported by:  IPM
In this paper, we introduce an action for the warm inflation model with direct coupling between the pseudoscalar field and massless SU(2) gauge fields. The potential of the inflaton is protected against the thermal corrections in a thermal bath of gauge fields even with strong direct interaction between the 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 the order of the Hubble slow-roll parameter [(ϵϕ)/(1+Q)] even in the f < Mp limit.

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