On the ghost issue of extended quasidilaton
arXiv:1706.07215 · doi:10.1103/PhysRevD.96.104032
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.
arXiv comment6 pages; some formulae corrected; version accepted by PRD
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