BMS + transformations act nontrivially on outgoing gravitational scattering data while preserving intrinsic structure at future null infinity (I + ). BMS − transformations similarly act on ingoing data at past null infinity (I − ). In this paper we apply -within a suitable finite neighborhood of the Minkowski vacuum -results of Christodoulou and Klainerman to link I + to I − and thereby identify "diagonal" elements BMS 0 of BMS + ×BMS − . We argue that BMS 0 is a nontrivial infinite-dimensional symmetry of bo…
scite is a Brooklyn-based startup that helps researchers better discover and evaluate scientific articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by researchers from dozens of countries and is funded in part by the National Science Foundation and the National Institute of Drug Abuse of the National Institutes of Health.