BMS algebra from residual gauge invariance in light-cone gravity
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
Abstract
A bstract 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.
Topics & Concepts
ResidualHamiltonian (control theory)Light cone gaugeGauge theoryMathematical physicsPhysicsGauge fixingLight coneMathematicsGauge (firearms)Quadratic equationGeometryGauge bosonMathematical optimizationAlgorithmArchaeologyHistoryBlack Holes and Theoretical PhysicsNoncommutative and Quantum Gravity TheoriesCosmology and Gravitation Theories