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No-go for Partially Massless Spin-2 Yang-Mills
Sebastian Garcia-Saenz, Kurt Hinterbichler, Austin Joyce +2
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, i…
Self-accelerating Massive Gravity: Superluminality, Cauchy Surfaces and Strong Coupling
Pavel Motloch, Wayne Hu, Austin Joyce +1
Self-accelerating solutions in massive gravity provide explicit, calculable examples that exhibit the general interplay between superluminality, the well-posedness of the Cauchy pr…
A Hidden Symmetry of the Galileon
Kurt Hinterbichler, Austin Joyce
We show that there is a special choice of parameters for which the galileon theory is invariant under an enhanced shift symmetry whose non-linear part is quadratic in the coordinat…