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Models of inflation liberated by the curvaton hypothesis.

Research output: Contribution to journalJournal article

Published

Journal publication date15/06/2004
JournalPhysical Review
Journal number12
Volume69
Pages123509
Original languageEnglish

Abstract

It is usually supposed that inflation is of the slow-roll variety and that the inflaton generates the primordial curvature perturbation. According to the curvaton hypothesis, inflation need not be slow-roll, and if it is, the inflaton generates a negligible curvature perturbation. We find that the construction of slow-roll inflation models becomes much easier under this hypothesis. Also, thermal inflation followed by fast-roll becomes viable, with no slow-roll inflation at all.