Asymptotic symmetries and memories of gauge theories in FLRW spacetimes

Martin Enriquez-Rojo, Tobias Schroeder

Published 2022-07-27Version 1

In this paper, we investigate the asymptotic structure of gauge theories in decelerating and spatially flat Friedmann-Lema\^itre-Robertson-Walker universes. Firstly, we thoroughly explore the asymptotic symmetries of electrodynamics in this background, which reveals a major inconsistency already present in the flat case. Taking advantage of this treatment, we derive the associated memory effects, discussing their regime of validity and differences with respect to their flat counterparts. Next, we extend our analysis to non-Abelian Yang-Mills, coupling it dynamically and simultaneously to a Dirac spinor and a complex scalar field. Within this novel setting, we examine the (in-)compatibility of the covariant phase space formalism and the use of Poisson superbrackets.