Finite BMS transformations
Glenn Barnich, C\'edric Troessaert
TL;DR
This paper analyzes how finite BMS and Weyl transformations affect gravitational data at null infinity in three and four dimensions, considering arbitrary boundary conformal factors.
Contribution
It provides a detailed computation of the action of finite BMS and Weyl transformations on gravitational data for arbitrary boundary conformal factors in 3D and 4D.
Findings
Explicit formulas for BMS transformations in 3D and 4D
Inclusion of arbitrary boundary conformal factors
Enhanced understanding of asymptotic symmetries in gravity
Abstract
The action of finite BMS and Weyl transformations on the gravitational data at null infinity is worked out in three and four dimensions in the case of an arbitrary conformal factor for the boundary metric induced on Scri.
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