[HTML][HTML] Superrenormalizable quantum gravity with complex ghosts
L Modesto, IL Shapiro - Physics Letters B, 2016 - Elsevier
Physics Letters B, 2016•Elsevier
We suggest and briefly review a new sort of superrenormalizable models of higher
derivative quantum gravity. The higher derivative terms in the action can be introduced in
such a way that all the unphysical massive states have complex poles. According to the
literature on Lee–Wick quantization, in this case the theory can be formulated as unitary,
since all massive ghosts-like degrees of freedom are unstable.
derivative quantum gravity. The higher derivative terms in the action can be introduced in
such a way that all the unphysical massive states have complex poles. According to the
literature on Lee–Wick quantization, in this case the theory can be formulated as unitary,
since all massive ghosts-like degrees of freedom are unstable.
Abstract
We suggest and briefly review a new sort of superrenormalizable models of higher derivative quantum gravity. The higher derivative terms in the action can be introduced in such a way that all the unphysical massive states have complex poles. According to the literature on Lee–Wick quantization, in this case the theory can be formulated as unitary, since all massive ghosts-like degrees of freedom are unstable.
Elsevier
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