Bondi-Metzner-Sachs algebra as an extension of the Poincaré symmetry in light-cone gravity
Artikel i vetenskaplig tidskrift, 2021

We analyze possible local extensions of the Poincaré symmetry in light-cone gravity in four dimensions. We use a formalism where we represent the algebra on the two physical degrees of freedom, one with helicity 2 and the other with helicity −2. The representation is non-linearly realized and one of the light-cone momenta is the Hamiltonian, which is hence a non-linear generator of the algebra. We find that this can be locally realized and the Poincaré algebra extended to the BMS symmetry without any reference to asymptotic limits.

Gauge Symmetry

Classical Theories of Gravity

Space-Time Symmetries


S. Ananth

Indian Institute of Science

Lars Brink

Chalmers, Fysik

S. Majumdar

Université libre de Bruxelles (ULB)

Journal of High Energy Physics

1126-6708 (ISSN) 1029-8479 (eISSN)

Vol. 2021 7 129


Algebra och logik


Matematisk analys



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