The decoupling limit of multi-gravity: multi-Galileons, dualities and more

Johannes Noller, James H. C. Scargill

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Abstract

In this paper we investigate the decoupling limit of a particular class of multi-gravity theories, i.e. of theories of interacting spin-2 fields. We explicitly compute the interactions of helicity-0 modes in this limit, showing that they take on the form of multi- Galileons and dual forms. In the process we extend the recently discovered Galileon dualities, deriving a set of new multi-Galileon dualities. These are also intrinsically connected to healthy, but higher-derivative, multi-scalar field theories akin to ‘beyond Horndeski’ models.
Original languageEnglish
Article number34
Pages (from-to)1-40
Number of pages40
JournalJournal of High Energy Physics
Volume2015
Issue number5
DOIs
Publication statusPublished - 7 May 2015

Keywords

  • classical theories of gravity
  • duality in gauge field theories
  • effective field theories
  • RCUK
  • STFC

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