Inflation by non-minimal coupling

Seong Chan Park, Satoshi Yamaguchi

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Inflationary scenarios based on simple non-minimal coupling a2R and its generalizations are studied. Generalizing the form of non-minimal coupling to K()R with an arbitrary function K(), we show that the flat potential is still obtainable when V ()/K2() is asymptotically constant. Very interestingly, if the ratio of the dimensionless self-coupling constant (λ) of the inflaton field and the non-minimal coupling constant (a) is small, , the cosmological observables for general monomial cases (K∼a m, V∼λ2m) are in good agreement with recent observational data.

Original languageEnglish
Article number009
JournalJournal of Cosmology and Astroparticle Physics
Volume2008
Issue number8
DOIs
Publication statusPublished - 2008 Aug 1

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

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