BRST symmetry of Unimodular Gravity

S. Upadhyay, M. Oksanen, R. Bufalo

Published 2015-10-01Version 1

We derive the BRST symmetry for two versions of unimodular gravity, namely, fully diffeomorphism-invariant unimodular gravity and unimodular gravity with fixed metric determinant. The BRST symmetry is generalized further to the finite field-dependent BRST, in order to establish the connection between different gauges in each of the two versions of unimodular gravity.