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SUMMARY:Extremal Rotating Black Holes in Einsteinian Cubic Gravity
DTSTART;VALUE=DATE-TIME:20200116T114500Z
DTEND;VALUE=DATE-TIME:20200116T120000Z
DTSTAMP;VALUE=DATE-TIME:20210614T021200Z
UID:indico-contribution-3697022@indico.cern.ch
DESCRIPTION:Speakers: David Pereñíguez Rodríguez\nNew solutions of Eins
teinian cubic gravity coupled to a Maxwell field that describe the near-ho
rizon geometry of charged and rotating black holes are presented. We show
that the AdS$_2\\times\\mathbb{S}^2$ near-horizon geometry of Reissner-Nor
dstr\\"om black holes receives no corrections\, but deviations with respec
t to the extremal Kerr-Newman solution appear as we turn on the angular mo
mentum. We provide analytic slowly-spinning approximations\, as well as nu
meric solutions for these corrected geometries\, but we also find addition
al solutions that do not reduce to AdS$_2\\times\\mathbb{S}^2$ geometries
in any limit and that do not have a counterpart in Einstein gravity. R
emarkably\, we are able to obtain closed-form exact expressions for the ar
ea and Wald's entropy of all of these black holes. To the best of our know
ledge\, this is the first time the entropy of a rotating black hole in hig
her-order gravity has been exactly computed. Using this result\, we ana
lyze the phase space of extremal back holes\, which turns out to be consid
erably more involved than the situation in Einstein gravity.\nhttps://indi
co.cern.ch/event/850220/contributions/3697022/
LOCATION:Santiago de Compostela
RELATED-TO:indico-event-850220@indico.cern.ch
URL:https://indico.cern.ch/event/850220/contributions/3697022/
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