BMS current algebra in the context of the Newman–Penrose formalism
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Publication:5161982
DOI10.1088/1361-6382/AB7C01zbMATH Open1479.83179arXiv1910.14588OpenAlexW3010196358MaRDI QIDQ5161982
Author name not available (Why is that?)
Publication date: 1 November 2021
Published in: (Search for Journal in Brave)
Abstract: Starting from an action principle adapted to the Newman-Penrose formalism, we provide a self-contained derivation of BMS current algebra, which includes the generalization of the Bondi mass loss formula to all BMS generators. In the spirit of the Newman-Penrose approach, infinitesimal diffeomorphisms are expressed in terms of four scalars rather than a vector field. In this framework, the on-shell closed co-dimension two forms of the linearized theory associated with Killing vectors of the background are constructed from a standard algorithm. The explicit expression for the breaking that occurs when using residual gauge transformations instead of exact Killing vectors is worked out and related to the presymplectic flux.
Full work available at URL: https://arxiv.org/abs/1910.14588
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