Physics Seminar
Date: Monday, 16 September 2024
Time: 11.45 AM
Venue: Lecture Hall 1
Light-cone approach to asymptotic symmetries
Sucheta Majumdar
ENS, Lyon, France.
16-09-24

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Abstract

Symmetries, both spacetime and gauge, serve as powerful tools in formulating consistent physical theories. After a brief overview of the role of asymptotic symmetries in gravity and gauge theories, I will discuss how these symmetries can be canonically described within the light-cone formalism, arising from residual gauge invariance. I will address several subtleties that arise when setting up the canonical formulation on a single or on two intersecting null surfaces. Finally, I will comment on interesting links between the light-cone approach and ultra-relativistic or Carrollian physics, which are relevant for asymptotic symmetries in gravity and flat space holography.