New quasidilaton theory in partially constrained vielbein formalism

Antonio De Felice, A. E. Gumrukcuoglu, Lavinia Heisenberg, Shinji Mukohyama, Norihiro Tanahashi

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Abstract

In this work we study the partially constrained vielbein formulation of the new quasidilaton theory of massive gravity, where the quasidilaton field couples to both physical and fiducial metrics simultaneously via a composite effective metric and Lorentz violation is introduced by a constraint on the vielbein. This formalism improves the new quasidilaton model since the Boulware-Deser ghost is removed fully non-linearly at all scales. This also yields crucial implications in the cosmological applications. We derive the governing cosmological background evolution and study the stability of the attractor solution.

Original languageEnglish
Article number061
JournalJournal of Cosmology and Astroparticle Physics
Volume2016
Issue number5
DOIs
Publication statusPublished - 25 May 2016
Externally publishedYes

Keywords

  • cosmological perturbation theory
  • dark energy theory
  • modified gravity
  • RCUK
  • STFC
  • ST/L00044X/1

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