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Journal articles

Consistent massive graviton on arbitrary backgrounds

Abstract : We obtain the fully covariant linearized field equations for the metric perturbation in the de Rham-Gabadadze-Tolley (dRGT) ghost-free massive gravities. For a subset of these theories, we show that the nondynamical metric that appears in the dRGT setup can be completely eliminated leading to the theory of a massive graviton moving in a single metric. This has a mass term which contains nontrivial contributions of the space-time curvature. We show further how five covariant constraints can be obtained including one which leads to the tracelessness of the graviton on flat space-time and removes the Boulware-Deser ghost. The five constraints are obtained for a background metric which is arbitrary, i.e. which does not have to obey the background field equations.
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https://hal-insu.archives-ouvertes.fr/insu-03644944
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Submitted on : Thursday, April 28, 2022 - 4:31:58 PM
Last modification on : Thursday, April 28, 2022 - 4:32:17 PM

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PhysRevD.91.104013.pdf
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Laura Bernard, Cédric Deffayet, Mikael von Strauss. Consistent massive graviton on arbitrary backgrounds. Physical Review D, 2015, 91, ⟨10.1103/PhysRevD.91.104013⟩. ⟨insu-03644944⟩

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