ETD

• asymptotic symmetries
• gauge symmetry
• higher spins
• soft theorems

The present work aims to propose a higher-spin generalization of the connection, recently pointed out, between infinite-dimensional asymptotic symmetries of gravity/QED and soft theorems in particle physics. To this purpose, we first set the stage for the current debate on the topic by reviewing the main results about asymptotically flat spaces, together with Weinberg's celebrated soft theorems. We then show that, under a specific choice of falloff conditions, it is indeed possible to retrieve an infinite-dimensional asymptotic symmetry group for any integer spin, whose corresponding Ward identities are equivalent to Weinberg's soft factorization theorem.
In addition, we also address the definition of asymptotic symmetries in higher-dimensional spacetimes. To tackle this problem we provide a geometric argument supporting the existence of an infinite-dimensional asymptotic symmetry group in any dimension.