New D-term chaotic inflation in supergravity and leptogenesis

Kenji Kadota, Teruhiko Kawano, Masahide Yamaguchi

Published 2008-02-04, updated 2008-05-23Version 2

We present a new model of D-term dominated chaotic inflation in supergravity. The F-flat direction present in this model is lifted by the dominant D-term, which leads to chaotic inflation and subsequent reheating. No cosmic string is formed after inflation because the U(1) gauge symmetry is broken during inflation. The leptogenesis scenario via the inflaton decay in our D-term chaotic inflation scenario is also discussed.