Constraints on general second-order scalar-tensor models from gravitational Cherenkov radiation

Rampei Kimura, Kazuhiro Yamamoto

研究成果: Article

45 引用 (Scopus)

抄録

We demonstrate that the general second-order scalar-tensor theories, which have attracted attention as possible modified gravity models to explain the late time cosmic acceleration, could be strongly constrained from the argument of the gravitational Cherenkov radiation. To this end, we consider the purely kinetic coupled gravity and the extended galileon model on a cosmological background. In these models, the propagation speed of tensor mode could be less than the speed of light, which puts very strong constraints from the gravitational Cherenkov radiation.

元の言語English
記事番号50
ジャーナルJournal of Cosmology and Astroparticle Physics
2012
発行部数7
DOI
出版物ステータスPublished - 2012 7 1
外部発表Yes

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gravitational waves
tensors
scalars
gravitation
propagation
kinetics

ASJC Scopus subject areas

  • Astronomy and Astrophysics

これを引用

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