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arxiv: 1008.0079 · v1 · pith:EBMZHHOGnew · submitted 2010-07-31 · 🌌 astro-ph.CO · hep-ph

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

classification 🌌 astro-ph.CO hep-ph
keywords curvatonwellamplitudebackgrounddoublegravitationalinflationnon-gaussianity
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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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