New kinetic interactions for massive gravity

  title={New kinetic interactions for massive gravity},
  author={C. D. Rham and A. Matas and A. Tolley},
  journal={Classical and Quantum Gravity},
  • C. D. Rham, A. Matas, A. Tolley
  • Published 2014
  • Physics
  • Classical and Quantum Gravity
  • We show that there can be no new Lorentz invariant kinetic interactions free from the Boulware–Deser ghost in four dimensions in the metric formulation of gravity, beyond the standard Einstein–Hilbert, up to total derivatives. We use dimensional deconstruction as a way to motivate a non-linear ansatz for potential new ghost-free kinetic interactions for massive gravity, bi-gravity and multi-gravity in four and higher dimensions. These interactions descend from Lovelock terms, and so naively one… CONTINUE READING
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