A canonical bracket for open gravitational system

2021/11/29 by Freidel, Laurent · 3 citations
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2111.14747

Abstract

This paper shows that the generalization of the Barnich-Troessaert bracket recently proposed to represent the extended corner algebra can be obtained as the canonical bracket for an extended gravitational Lagrangian. This extension effectively allows one to reabsorb the symplectic flux into the dressing of the Lagrangian by an embedding field. It also implies that the canonical Poisson bracket of charges forms a representation of the extended corner symmetry algebra.

Cited by

• A Theory of Backgrounds and Background Independence
• Boundary Actions and Loop Groups: A Geometric Picture of Gauge Symmetries at Null Infinity
• Infinite-dimensional symmetries in plane wave spacetimes

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