[hep-th] Seminar Roberta Emparana, sreda 31. jul 15:00

[Mihailo Čubrović]

Poštovane kolege,

Kao što sam ranije najavio, 31. jula (sreda) Institut za fiziku će 
posetiti troje gostiju: Roberto Emparan, Aditya Hebbar i Jildou 
Hollander. Roberto je profesor Univerziteta u Barseloni i bavi se crnim 
rupama u klasičnoj i kvantnoj gravitaciji. Aditya je postdok na IPhT u 
Parizu i bavi se boostrappingom i drugim modernim tehnikama u konformnoj 
teoriji polja. Jildou je PhD student u Amsterdamu i sa Janom de Boerom 
radi na mikrostanjima i dinamici crnih rupa. Svi troje će 31. jula od 11 
sati biti na Institutu i dostupni za diskusije, pa mi se zainteresovani 
mogu javiti da napravimo raspored.

Roberto će takođe održati seminar u 15:00. Roberto je odličan predavač 
pa PhD studentima posebno preporučujem da ga poslušaju, počeće od 
laganog uvoda. Naslov i apstrakt slede.

Title: Black hole microstates

Abstract: Identifying a set of microstates for a black hole in a regime 
of strong gravitational coupling is necessary to understand the nature 
of the black hole interior, the singularity, the experience of the 
infalling observers, and other problems. Black holes can harbor 
arbitrarily large interiors in the form of "bag-of-gold geometries", 
which have the desirable property of providing good microstates, but the 
bad feature of yielding too many of them, even infinite. I will describe 
how the gravitational path integral allows the construction of an 
extremely universal class of microstates (neutral or charged, with 
rotation, extremal or not, and in any number of dimensions), and argue 
that spacetime wormholes reduce the dimension of the space of these 
states to a value in agreement with the Bekenstein-Hawking formula.

-- 
Dr. Mihailo Čubrović

Center for the Study of Complex Systems
Institute of Physics Belgrade
National Institute of the Republic of Serbia
Pregrevica 118, 11080 Belgrade, Serbia
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