Journal of High Energy Physics (Oct 2019)

Asymptotic symmetries and Weinberg’s soft photon theorem in Mink d+2

  • Temple He,
  • Prahar Mitra

DOI
https://doi.org/10.1007/JHEP10(2019)213
Journal volume & issue
Vol. 2019, no. 10
pp. 1 – 27

Abstract

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Abstract We show that Weinberg’s leading soft photon theorem in massless abelian gauge theories implies the existence of an infinite-dimensional large gauge symmetry which acts non-trivially on the null boundaries ± of (d + 2)-dimensional Minkowski spacetime. These symmetries are parameterized by an arbitrary function ε(x) of the d-dimensional celestial sphere living at ± . This extends the previously established equivalence between Weinberg’s leading soft theorem and asymptotic symmetries from four and higher even dimensions to all higher dimensions.

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