Massive gravity with non-minimal coupling

Understand

We propose new massive gravity theories with 5 dynamical degrees of freedom.

• We evade uniqueness theorems regarding the form of the kinetic and potential terms by adopting the "generalized massive gravity" framework, where a global translation invariance is broken.
• By exploiting the rotation symmetry in the field space, we determine two novel classes of theories.
• The first one is an extension of generalized massive gravity with a non-minimal coupling.