标题： 作为Liouville理论的平直极限的三维Bondi-Metzner-Sachs不变二维场论 显示英文标题

标题： Three-dimensional Bondi-Metzner-Sachs invariant two-dimensional field theories as the flat limit of Liouville theory

摘要： 在引力背景下，Liouville理论是控制渐近AdS₃时空经典边界动力学的二维共形场论。通过取Liouville哈密顿形式耦合常数的一个合适极限，我们构建并分析了一个BMS₃不变的二维场论，该理论很可能控制三维渐近平直引力在光无限处的边界动力学。 显示英文摘要

摘要： In the gravitational context, Liouville theory is the two-dimensional conformal field theory that controls the boundary dynamics of asymptotically AdS_3 spacetimes at the classical level. By taking a suitable limit of the coupling constants of the Hamiltonian formulation of Liouville, we construct and analyze a BMS_3 invariant two-dimensional field theory that is likely to control the boundary dynamics at null infinity of three dimensional asymptotically flat gravity.