The decay of the inflaton in no-scale supergravity

Motoi Endo, Kenji Kadota, Keith A. Olive, Fuminobu Takahashi, T. T. Yanagida

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We study the decay of the inflaton in no-scale supergravity and show that decay due to the gravitational interactions through supergravity effects is highly suppressed relative to the case in minimal supergravity or models with a generic Kähler potential. We also show that decay to gravitinos is suppressed. We demonstrate that decay and sufficient reheating are possible with the introduction of a non-trivial gauge kinetic term. This channel may be dominant in no-scale supergravity, yet yields a reheating temperature which is low enough to avoid the gravitino problem while high enough for big bang nucleosynthesis and baryogenesis.

Original languageEnglish
Article number018
JournalJournal of Cosmology and Astroparticle Physics
Issue number2
DOIs
Publication statusPublished - 2007 Feb 1
Externally publishedYes

Keywords

  • Inflation
  • Physics of the early universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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