New actions for modified gravity and supergravity

Sergei V. Ketov, Takahiro Terada

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We extend the f (R) gravity action by including a generic dependence upon the Weyl tensor, and further generalize it to supergravity by using the super-curvature R and super-Weyl W chiral superfields in N = 1 chiral curved superspace. We argue that our (super)gravitational actions are the meaningful extensions of the phenomenological f(R) gravity and its locally supersymmetric generalization towards their UV completion and their embedding into superstring theories. The proposed actions can be used for study of cosmological perturbations and gravitational instabilities due to a nonvanishing Weyl tensor in gravity and supergravity.

Original languageEnglish
Article number127
JournalJournal of High Energy Physics
Volume2013
Issue number7
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Classical Theories of Gravity
  • Cosmology of Theories beyond the SM
  • Supergravity Models
  • Superspaces

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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