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Gauss-Bonnet dark energy

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Nojiri, Shin’ichi, Odintsov, Sergei D., Sasaki, Misao·2005·Physical Review D
DOI 10.1103/physrevd.71.123509
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Abstract

We propose the Gauss-Bonnet dark energy model inspired by string/M-theory where standard gravity with scalar contains additional scalar-dependent coupling with a Gauss-Bonnet invariant. It is demonstrated that the effective phantom (or quintessence) phase of the late universe may occur in the presence of such a term when the scalar is phantom or for nonzero potential (for canonical scalar). However, with the increase of the curvature, the Gauss-Bonnet term may become dominant so that the phantom phase is transient and the $w=\ensuremath{-}1$ barrier may be passed. Hence, the current acceleration of the universe may be caused by a mixture of scalar phantom and/or potential or stringy effects. It is remarkable that scalar-Gauss-Bonnet coupling acts against the big rip occurrence also in phantom cosmology.

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Metadata

Authors
Nojiri, S., Odintsov, S. D., & Sasaki, M.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2005-06-07
Volume
71
Issue
12
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.71.123509
OpenAlex
W2141564053
Cited by
742
References
0
FWCI
20.89
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Gauss-Bonnet dark energy. https://app.cochat.ai/papers/10.1103/physrevd.71.123509
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Nojiri, S., Odintsov, S. D., & Sasaki, M. (2005). Gauss-Bonnet dark energy. Physical Review D. https://doi.org/10.1103/physrevd.71.123509

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