Chaotic inflation in Jordan frame supergravity

Abstract

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