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Saeedeh Sadeghian

Saeedeh Sadeghian

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Science
Address: University of Mazandaran
Phone: 011-35302442

Research

Title
T-Witts from the horizon
Type
JournalPaper
Keywords
Black Holes, Gauge Symmetry, Global Symmetries, Space-Time Symmetries,
Year
2020
Journal JOURNAL OF HIGH ENERGY PHYSICS
DOI
Researchers Hamed Adami ، Daniel Grumiller ، Saeedeh Sadeghian ، Shahin Sheikh-Jabbari ، Céline Zwikel

Abstract

Expanding around null hypersurfaces, such as generic Kerr black hole horizons, using co-rotating Kruskal-Israel-like coordinates we study the associated surface charges, their symmetries and the corresponding phase space within Einstein gravity. Our surface charges are not integrable in general. Their integrable part generates an algebra including superrotations and a BMS3-type algebra that we dub \T-Witt algebra". The non-integrable part accounts for the ux passing through the null hypersurface. We put our results in the context of earlier constructions of near horizon symmetries, soft hair and of the program to semi-classically identify Kerr black hole microstates.