Is Bimetric Gravity Really Ghost Free? [PDF]
J. KlusonWe perform the Hamiltonian analysis of the bimetric theory of gravity introduced in [arXiv:1109.3515 [hep-th]]. We carefully analyze the requirement of the preservation of all constraints and we find that there is no additional constraint that could eliminate the ghost mode.View original: http://arxiv.org/abs/1301.3296
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