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DTSTART;TZID=America/New_York:20221020T103000
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DTSTAMP:20260510T031808
CREATED:20240215T103645Z
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SUMMARY:Love Symmetry of Black Holes
DESCRIPTION:General Relativity Seminar \nSpeaker: Sergei Dubovsky (New York University)\n\n\n\nTitle: Love Symmetry of Black Holes\n\n\nAbstract: Perturbations of massless fields in the Kerr-Newman black hole background enjoy a (“Love”) SL(2\,ℝ) symmetry in the suitably defined near zone approximation. We show how the intricate behavior of black hole responses in four and higher dimensions can be understood from the SL(2\,ℝ) representation theory. In particular\, static perturbations of four-dimensional black holes belong to highest weight SL(2\,ℝ) representations. It is this highest-weight property that forces the static Love numbers to vanish. We show that the Love symmetry is tightly connected to the enhanced isometries of extremal black holes. The Love symmetry also exhibits a peculiar UV/IR mixing.
URL:https://cmsa.fas.harvard.edu/event/gr_102022/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:General Relativity Seminar
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