Compère Geoffrey
Physique Théorique et Mathématique, Université Libre de Bruxelles and International Solvay Institutes, Campus Plaine C.P. 231, B-1050 Bruxelles, Belgium.
Phys Rev Lett. 2019 Jul 12;123(2):021101. doi: 10.1103/PhysRevLett.123.021101.
A framework that structures the gravitational memory effects and which is consistent with gravitational electric-magnetic duality is presented. A correspondence is described between memory observables, particular subleading residual gauge transformations, associated overleading gauge transformations and their canonical surface charges. It is shown that matter-induced transitions can generate infinite towers of independent memory effects at null infinity. These memories are associated with an infinite number of conservation laws at spatial infinity which lead to degenerate towers of subleading soft graviton theorems. It is shown that the leading order mutually commuting supertranslations and (novel) superrotations are both associated with a leading displacement memory effect, which suggests the existence of new boundary conditions.
提出了一个构建引力记忆效应且与引力电磁对偶性相一致的框架。描述了记忆可观测量、特定的次主导残余规范变换、相关的主导规范变换及其正则面电荷之间的对应关系。结果表明，物质诱导的跃迁可以在类光无穷远处产生无穷多独立的记忆效应塔。这些记忆与空间无穷远处的无穷多个守恒定律相关联，这些守恒定律导致了次主导软引力子定理的简并塔。结果表明，主导阶相互对易的超平移和（新颖的）超旋转都与主导位移记忆效应相关联，这暗示了新边界条件的存在。
