BMS algebra from residual gauge invariance in light-cone gravity
Open Access
- 2 November 2021
- journal article
- research article
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2021 (11) , 1-18
Abstract
We analyze the residual gauge freedom in gravity, in four dimensions, in the light-cone gauge, in a formulation where unphysical fields are integrated out. By checking the invariance of the light-cone Hamiltonian, we obtain a set of residual gauge transformations, which satisfy the BMS algebra realized on the two physical fields in the theory. Hence, the BMS algebra appears as a consequence of residual gauge invariance in the bulk and not just at the asymptotic boundary. We highlight the key features of the light-cone BMS algebra and discuss its connection with the quadratic form structure of the Hamiltonian.Keywords
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