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Probing the unitarity of the renormalizable theory of massive conformal gravity

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arxiv 1707.08851 v3 pith:JQNLJ7BF submitted 2017-07-27 gr-qc hep-th

classification gr-qchep-th
keywords massivetheoryconformalgravitypolesrenormalizableappearingcomplex
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The presence of an unstable massive spin-2 ghost state in the renormalizable theory of massive conformal gravity leads to a pair of complex poles appearing in the first sheet of the energy plane. Here we show that the positions of these poles are gauge dependent, which makes the theory unitary.

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