Near-horizon Bondi-Metzner-Sachs symmetry, dimensional reduction, and black hole entropy
Steven Carlip
Abstract
In an earlier short paper [Phys. Rev. Lett. 120, 101301 (2018)], I argued that the horizon-preserving diffeomorphisms of a generic black hole are enhanced to a larger three-dimensional Bondi-Metzner-Sachs symmetry, which is powerful enough to determine the Bekenstein-Hawking entropy. Here, I provide details and extensions of that argument, including a loosening of horizon boundary conditions and a more thorough treatment of dimensional reduction and meaning of a ``near-horizon symmetry.''
Topics & Concepts
PhysicsHorizonEntropy (arrow of time)Reduction (mathematics)Symmetry (geometry)Mathematical physicsTheoretical physicsClassical mechanicsMathematicsQuantum mechanicsGeometryAstronomyBlack Holes and Theoretical PhysicsCosmology and Gravitation TheoriesNoncommutative and Quantum Gravity Theories