Disformally self-tuning gravity

Abstract

We extend a previous self-tuning analysis of the most general scalar-tensor theory of gravity in four dimensions with second order field equations by considering a generalized coupling to the matter sector. Through allowing a disformal coupling to matter we are able to extend the Fab Four model and construct a new class of theories that are able to tune away the cosmological constant on Friedmann-Lemaitre-Robertson-Walker backgrounds.

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Correspondence to William T. Emond.

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ArXiv ePrint: 1511.02055v3

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Emond, W.T., Saffin, P.M. Disformally self-tuning gravity. J. High Energ. Phys. 2016, 161 (2016). https://doi.org/10.1007/JHEP03(2016)161

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Keywords

  • Classical Theories of Gravity
  • Cosmology of Theories beyond the SM