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arXiv · 1008.0079

Non-Gaussianity and gravitational wave background in curvaton with a double well potential

Ki-Young Choi·Osamu Seto
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Abstract

We study the density perturbation by a curvaton with a double well potential and estimate the nonlinear parameters for non-Gaussianity and the amplitude of gravitational wave background generated during inflation. The predicted nonlinear parameters strongly depend on the size of a curvaton self-coupling constant as well as the reheating temperature after inflation for a given initial amplitude of the curvaton. The difference from usual massive self-interacting curvaton is also emphasized.

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Ki-Young Choi, Osamu Seto. 2010-07-31. Non-Gaussianity and gravitational wave background in curvaton with a double well potential. https://doi.org/10.1103/physrevd.82.103519

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