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arXiv · 1512.05657

Starobinsky-Type Inflation With Products of Kaehler Manifolds

C. Pallis·N. Toumbas
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Abstract

We present a novel realization of Starobinsky-type inflation within Supergravity using two chiral superfields. The proposed superpotential is inspired by induced-gravity models. The Kaehler potential contains two logarithmic terms, one for the inflaton T and one for the matter-like field S, parameterizing the SU(1,1)/U(1)x SU(2)/U(1) Kaehler manifold. The two factors have constant curvatures -m/n and 2/n2, where n, m are the exponents of T in the superpotential and Kaehler potential respectively, and 0<n2<=6. The inflationary observables depend on the ratio 2n/m only. Essentially they coincide with the observables of the original Starobinsky model. Moreover, the inflaton mass is predicted to be 3x10^13 GeV.

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C. Pallis, N. Toumbas. 2016-07-07. Starobinsky-Type Inflation With Products of Kaehler Manifolds. https://doi.org/10.1088/1475-7516%2F2016%2F05%2F015

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