General analysis of inflation in the Jordan frame supergravity

Kazunori Nakayama, Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We study various inflation models in the Jordan frame supergravity with a logarithmic K̈ahler potential. We find that, in a class of inflation models containing an additional singlet in the superpotential, three types of chaotic inflation can be realized: the Higgs-type inflation, power-law inflation, and inflation with/without a running kinetic term. The former two are possible if the holomorphic function dominates over the non-holomorphic one in the frame function, while the inflation with/without a running kinetic term occurs when both are comparable. Interestingly, the fractional-power potential can be realized by the running kinetic term. We also discuss the implication for the Higgs inflation in supergravity.

Original languageEnglish
Article number8
JournalJournal of Cosmology and Astroparticle Physics
Volume2010
Issue number11
DOIs
Publication statusPublished - 2010 Nov 1
Externally publishedYes

Keywords

  • Inflation
  • Physics of the early universe
  • Supersymmetry and cosmology

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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