Ghost free massive gravity in the Stückelberg language

• DOI: 10.1016/j.physletb.2012.03.081
• Publication Date: 2012-04-02T13:45:48Z
• Authors: Claudia de Rham; Gregory Gabadadze; Andrew J. Tolley
• Keywords: Decoupling (probability); Hessian matrix; Massive gravity

Massive gravity in 4 dimensions has been shown to be free of the Boulware–Deser (BD) ghost ADM language for a specific choice mass terms. We show here how this is consistent with Stückelberg beyond decoupling limit, and constraint required remove BD arises framework non-perturbatively, without use field redefinitions. emphasize subtlety obtaining constraint, that overlooked previous literature. In both formalisms vanishing determinant Hessian guarantees absence ghost.