2023
DOI: 10.1007/jhep08(2023)168
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On the ghost problem of conformal gravity

Anamaria Hell,
Dieter Lüst,
George Zoupanos

Abstract: We study the metric perturbations around the de Sitter and Minkowski backgrounds in Conformal Gravity. We confirm the presence of ghosts in both cases. In the de Sitter case, by applying the Maldacena boundary conditions — the Neumann boundary condition and the positive-frequency mode condition — to the metric, we show that one cannot recover a general solution for the perturbations. In turn, alongside the Neumann boundary condition, we derive an additional condition with which the perturbations of conformal g… Show more

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Cited by 8 publications
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