Inflation and nonminimal scalar-curvature coupling in gravity and supergravity

Sergei V. Ketov, Alexei A. Starobinsky

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


Inflationary slow-roll dynamics in Einstein gravity with a nonminimal scalar-curvature coupling can be equivalent to that in the certain ∫(R) gravity theory. We review the correspondence and extend it to N=l supergravity. The nonminimal coupling in supergravity is rewritten in terms of the standard ('minimal') N=l matter-coupled supergravity by using curved superspace. The established equivalence between two different inflationary theories means the same inflaton scalar potential, and does not imply the same post-inflationary dynamics and reheating.

Original languageEnglish
Article number022
JournalJournal of Cosmology and Astroparticle Physics
Issue number8
Publication statusPublished - Aug 2012
Externally publishedYes


  • Inflation
  • Modified gravity
  • Supersymmetry and cosmology

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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