UEICMSNew Seminar Room
FIRST seminar
SECOND seminar
UE -->
ICMSNew Seminar Room2016-09-28Daniel GrumillerVienna Tech. U.Preseminar for PhD StudentsDaniel GrumillerVienna Tech. U.Soft Heisenberg hairThe notion of "soft hair" refers to zero energy excitations in the near horizon region of black holes or cosmologies, advocated by Hawking, Perry and Strominger. I review recent results on soft hair in three spacetime dimensions. In particular, I focus on the near horizon symmetry algebra, which turns out to be surprisingly simple, namely infinite copies of the Heisenberg algebra. The results are universal (in a sense that I shall make precise) and could generalize to higher dimensions.
Andrius StikonasUoEScrambling time in eternal BTZ black holeIt is usually hard to compute entanglement entropy and mutual information for
conformal field theories (CFT). Ryu-Takayanagi proposals allows us to find the
same quantities using calculations in gravity. In this talk I will show how to
find holographic entanglement entropy and scrambling time for BTZ black hole
perturbed by a heavy (backreacting) particle. Holographic bulk description
improves on the schock-wave approximation in 3d bulk dimensions. I will also
discuss current attempts to generalize this calculation to the rotating BTZ
black hole.
UE -->
ICMSNew Seminar Room2016-10-12Yutaka MatsuoTokyo U.Preseminar for PhD StudentsGlenn BarnichBrussels U.Finite BMS transformationsAfter a review of holographic features of general relativity in 3 and 4 dimensions, I will show how to derive the transformation laws of the Bondi mass and angular momentum aspects under finite supertranslations, superrotations and complex Weyl rescalings.
Yutaka MatsuoTokyo U.UE -->
ICMSNew Seminar Room2016-10-26Preseminar for PhD StudentsOlivier Blondeau-FournierKing's Coll. LondonMarc Andre HellerTohoku U.UE -->
ICMSNew Seminar Room2016-11-09Preseminar for PhD StudentsManuela KulaxiziTrinity Coll. DublinAndrei ParnachevTrinity Coll. DublinUE -->
ICMSNew Seminar Room2016-11-23Preseminar for PhD StudentsAndrea SantiBologna U.UE -->
ICMSNew Seminar Room2016-12-07Preseminar for PhD Students