No-go for Partially Massless Spin-2 Yang-Mills

Understand

There are various no-go results forbidding self-interactions for a single partially massless spin-2 field.

• Given the photon-like structure of the linear partially massless field, it is natural to ask whether a multiplet of such fields can interact under an internal Yang-Mills like extension of the partially massless symmetry.
• We give two arguments that such a partially massless Yang-Mills theory does not exist.
• The first is that there is no Yang-Mills like non-abelian deformation of the partially massless symmetry, and the second is that cubic vertices with the appropriate structure constants do not exist.