Alexander Zhiboedov is a theoretical physicist who, with Andrew Strominger, connected gravitational memory to the Soft graviton theorem. Their 2014 preprint considers arrays of detectors before and after passage of a gravitational radiation pulse near future null infinity.
The resulting relative displacement reproduces gravitational memory, while its formula is related to the low-energy limit described by the Soft graviton theorem. This unites a lasting change in detector separation with an apparently different statement about emission of very low-energy gravitons.[ref]
Gravitational Memory, BMS Supertranslations and Soft Theorems by Andrew Strominger and Alexander Zhiboedov. Abstract and §4; preprint submitted 21 November 2014
Institutional profile: theory.cern/roster/zhiboedov-alexander.
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