BMS algebra from residual gauge invariance in light-cone gravity

Ananth, Sudarshan; Brink, Lars; Majumdar, Sucheta

doi:doi/10.1007/JHEP11(2021)008

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BMS algebra from residual gauge invariance in light-cone gravity

par Ananth, Sudarshan ;Brink, Lars ;Majumdar, Sucheta

Référence The journal of high energy physics (Online), 2021, 11, 8
Publication Publié, 2021-11

Article révisé par les pairs

Résumé :

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.

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