Curvaton with Polynomial Potential

Details Curvaton with Polynomial Potential Curvaton with Polynomial Potential

2008-08-13

arxiv.org/abs/0808.1793v2

JCAP 0811:005,2008

Physics

High Energy Physics

High Energy Physics - Theory

18 pages; a mistake in sec.2.2.2 corrected, enhancement of $g_{NL}$ in the mixed scenarion discussed, version for publication

Scientific paper

10.1088/1475-7516/2008/11/005

In general a weakly self-interacting curvaton field is expected and the curvaton potential takes the polynomial form. The curvaton potential can be dominated by the self-interaction term during the period of inflation if the curvaton field stays at a large vacuum expectation value. We use the $\delta {\cal N}$ formalism to calculate the primordial curvature perturbation in the various possible scenarios which make the curvaton model much richer.

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