paper

Galilean Gauge Theories from Null Reductions

arXiv:2201.12629 · doi:10.1007/JHEP04(2022)176

Abstract

The procedure of null reduction provides a concrete way of constructing field theories with Galilean invariance. We use this to examine Galilean gauge theories, viz. Galilean electrodynamics and Yang-Mills theories in spacetime dimensions 3 and 4. Different non-relativistic conformal symmetries arise in these contexts: Schr{ö}dinger symmetry in and Galilean conformal symmetry in . A canonical analysis further reveals that the symmetries enhance to their infinite dimensional versions in phase space and pick up central extensions. In addition, for the Abelian theory, we discuss non-relativistic electro-magnetic duality in and its difference with the version. We also mention some quantum aspects for both Abelian and non-Abelian theories.

43 pages, various figures

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