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Register a new userCounting ghosts in the ghost-free non-local gravity
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Authors
Ilya L. Shapiro
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In the recently proposed non-local theory of quantum gravity one can avoid massive tensor ghosts at the tree level by a special choice of the non-local form factor between the two Ricci tensors. We show that at the quantum level this theory has an infinite amount of massive unphysical states, mostly corresponding to complex poles.
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