Discrete Gravity with Local Lorentz Invariance
arXiv:2202.02486 · doi:10.1103/PhysRevD.106.064001
Abstract
A novel structure-preserving algorithm for general relativity in vacuum is derived from a lattice gauge theoretic discretization of the tetradic Palatini action. The resulting model of discrete gravity is demonstrated to preserve local Lorentz invariance and symplectic structure.