Chaotic inflation in Jordan frame supergravity

Details Chaotic inflation in Jordan frame supergravity Chaotic inflation in Jordan frame supergravity

2010-05-16

arxiv.org/abs/1005.2735v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, no figures, version to be published in JCAP

Scientific paper

We consider the inflationary scenario with non-minimal coupling in 4D Jordan frame supergravity. We find that there occurs a tachyonic instability along the direction of the accompanying non-inflaton field in generic Jordan frame supergravity models. We propose a higher order correction to the Jordan frame function for solving the tachyonic mass problem and show that the necessary correction can be naturally generated by the heavy thresholds without spoiling the slow-roll conditions. We discuss the implication of the result on the Higgs inflation in NMSSM.

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