Supertranslation in the bulk for generic spacetime

This article likely discusses a theoretical physics concept related to supertranslation, potentially within the context of general relativity or string theory. The term "bulk" suggests the analysis is focused on the interior of a spacetime, rather than its boundary. The use of "generic spacetime" implies the research aims to be broadly applicable, not limited to specific, simplified models. Further information is needed to provide a more detailed critique.