Speaker: Sucheta Majumdar (ENS Lyon)

Title: Residual gauge symmetries in Dirac’s front form

Abstract:

Of the three forms of Hamiltonian dynamics proposed by Dirac, the front form offers a unique framework for studying symmetries of null hypersurfaces. The goal of this talk is to discuss residual gauge symmetries in electromagnetism and gravity in Dirac’s front form. Working in the light-cone gauge, I will demonstrate how large gauge transformations and BMS supertranslations may be obtained from residual gauge invariance of the action. I will illustrate some striking similarities between residual gauge symmetries in the light-cone formulation and asymptotic symmetries in the conventional (3+1) Hamiltonian approach.

This talk will be in hybrid mode via zoom, please contact the seminar organisers to obtain the password.
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