paper

Massive Gravity Simplified: A Quadratic Action

arXiv:1106.5868 · doi:10.1007/JHEP08(2011)091

Abstract

We present a simplified formulation of massive gravity where the Higgs fields have quadratic kinetic term. This new formulation allows us to prove in a very explicit way that all massive gravity theories considered so far inevitably have Boulware-Deser ghost in non-trivial fluctuations of background metric.

8 pages, paragraph added proving that Bianchi identity does not imply vanishing of linearized curvature

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