On the quartic curvature gravity in the context of FRW cosmology

Masao Iihoshi, Sergei V. Ketov

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We consider the purely gravitational fourth-order (in the spacetime curvature) quantum corrections to the Einstein-Hilbert gravity action, coming from superstrings in the leading order with respect to the Regge slope parameter, and study their impact on the evolution of the Hubble scale in the context of the FRW cosmology, in four spacetime dimensions. We propose the generalized Friedmann equations, and rule out the most naive (Bel-Robinson tensor squared) gravity. Our new cosmological equations have exact inflationary solutions without a spacetime singularity.

Original languageEnglish
Pages (from-to)2153-2160
Number of pages8
JournalInternational Journal of Modern Physics A
Volume23
Issue number14-15
Publication statusPublished - 20 Jun 2008

Fingerprint

Quartic
Cosmology
cosmology
Gravity
Space-time
Curvature
curvature
gravitation
Bel
Superstring
tensors
slopes
Generalized Equation
Hilbert
Albert Einstein
Fourth Order
Slope
Tensor
Exact Solution
Singularity

Keywords

  • Cosmology
  • Gravity
  • Superstrings

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Mathematical Physics
  • Nuclear and High Energy Physics

Cite this

On the quartic curvature gravity in the context of FRW cosmology. / Iihoshi, Masao; Ketov, Sergei V.

In: International Journal of Modern Physics A, Vol. 23, No. 14-15, 20.06.2008, p. 2153-2160.

Research output: Contribution to journalArticle

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