Massive Unimodular Gravity

Published 27 Jun 2018 in hep-th and gr-qc | (1806.10507v4)

Abstract: A ghost free massive deformation of unimodular gravity (UG), in the spirit of {\em mimetic massive gravity}, is shown to exist. This construction avoids the no-go theorem for a Fierz-Pauli type of mass term in UG by giving up on Lorentz invariance. In our framework, the mimetic degree of freedom vanishes on-shell.

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