Skip to main content
Browse by:
GROUP

Until further notice, in-person public events have been canceled. This includes recruitment events, tours, student programs, reunions, performances, conferences and social events.
Event listings include how to access online content. Contact event sponsor with questions.
Please note that all visitors to campus must comply with Duke’s community safety measures, which include wearing a mask,
check https://returnto.duke.edu/campus-visitors/ before coming to campus, and follow direction provided by campus personnel.

String Theory Seminar Black Hole Memory Effect

Event Image
Icon calendar
Thursday, November 01, 2018
Icon time
3:30 pm - 4:30 pm
Icon speaker
Laura Donnay (Harvard)
Icon series
String Theory Seminar

Symmetries of asymptotically flat spacetimes, the so-called Bondi-Metzner-Sachs (BMS) symmetries, consist of a very rich set composed of supertranslations and superrotations that extend the Poincaré group to an infinite-dimensional group. After a review of BMS symmetries at null infinity, I will show that supertranslation and superrotation symmetries also naturally arise in the near-horizon region of extremal and non-extremal black holes and have non-vanishing conserved charges associated to them. I will then discuss the relationship between these horizon charges and the BMS ones by computing the memory effect produced at the black hole horizon by a gravitational shock wave sent from null infinity.

Contact: Cristin Paul