par Ananth, Sudarshan;Brink, Lars;Majumdar, Sucheta
Référence The journal of high energy physics (Online), 2021, 7, 129
Publication Publié, 2021-07
Article révisé par les pairs
Résumé : 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.