On the ghost issue of extended quasidilaton

Published 22 Jun 2017 in gr-qc and hep-th | (1706.07215v3)

Abstract: We report on our independent investigations of the puzzle of cosmological perturbations in extended quasidilaton. We confirm the claims of presence of the Boulware-Deser ghost. We use both the language of cosmological perturbations with broken diffeomorphisms and the Stuckelberg approach.

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