Modified gravity in higher dimensions, flux compactification, and cosmological inflation

Research output: Contribution to journalReview article

Abstract

We review a possible origin of cosmological inflation from higher (D) spacetime dimensions in the context of modified gravity theory. It is demonstrated that it requires a spontaneous warped compactification of higher pDq spacetime dimensions together with the stabilization of extra (D-4) dimensions by Freund-Rubin mechanism. The relevant tools include an extra gauge (D/2-1)-form field with a non-vanishing flux in compact dimensions and a positive cosmological constant in D dimensions. Those features are illustrated on the specific example in eight spacetime dimensions compactified on a four-sphere with a warped factor and a flux, which leads to a viable Starobinsky-like inflationary model in four (non-compact) spacetime dimensions.

Original languageEnglish
Article number1528
JournalSymmetry
Volume11
Issue number12
DOIs
Publication statusPublished - 1 Dec 2019

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Keywords

  • Extra dimensions
  • Inflation
  • Modified gravity

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Chemistry (miscellaneous)
  • Mathematics(all)
  • Physics and Astronomy (miscellaneous)

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