Polynomial Chaotic Inflation in Supergravity Revisited
arXiv:1407.7082 · doi:10.1016/j.physletb.2014.08.043
Abstract
We revisit a polynomial chaotic inflation model in supergravity which we proposed soon after the Planck first data release. Recently some issues have been raised in Ref.[12], concerning the validity of our polynomial chaotic inflation model. We study the inflaton dynamics in detail, and confirm that the inflaton potential is very well approximated by a polynomial potential for the parameters of our interest in any practical sense, and in particular, the spectral index and the tensor-to-scalar ratio can be estimated by single-field approximation. This justifies our analysis of the polynomial chaotic inflation in supergravity.
arXiv comment13 pages, 6 figures
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- Starobinsky-like inflation and soft-SUSY breaking
- Neutrino CP phases from Sneutrino Chaotic Inflation
- A Dynamic Modification to Sneutrino Chaotic Inflation
- Renormalization Group Improved Higgs Inflation with a Running Kinetic Term
- Quadratic chaotic inflation with a logarithmic-corrected mass
- Disappearing Inflaton Potential via Heavy Field Dynamics