Bulk supertranslation memories: a concept reshaping the vacua and black holes of general relativity

@article{Compre2016BulkSM,
  title={Bulk supertranslation memories: a concept reshaping the vacua and black holes of general relativity},
  author={Geoffrey Comp{\`e}re},
  journal={arXiv: High Energy Physics - Theory},
  year={2016}
}
  • G. Compère
  • Published 1 June 2016
  • Physics
  • arXiv: High Energy Physics - Theory
The memory effect is a prediction of general relativity on the same footing as the existence of gravitational waves. The memory effect is understood at future null infinity as a transition induced by null radiation from a Poincare vacuum to another vacuum. Those are related by a supertranslation, which is a fundamental symmetry of asymptotically flat spacetimes. In this essay, I argue that finite supertranslation diffeomorphisms should be extended into the bulk spacetime consistently with… 
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