High Energy Physics Seminar next Thursday (Murthy)

[HECAP - Margherita Di Giovannantonio]

*_HIGH ENERGY PHYSICS SEMINARS_*
*_
_*
*Thursday, 24*th *April* 2025, at *16:00* - *_Euler lecture hall_ **- 
https://indico.ictp.it/event/11014/*
**

*
*

*/!!! in person only !!!/*

*/
/*

Sameer Murthy (King's College London)


*“Supersymmetric Index of Black Holes and Black Strings**"*
*
*
_Abstract_
I will discuss the gravitational path integral in the context of the 
supersymmetric index. In the last five years or so, supersymmetric and 
non-extremal ("finite-temperature") saddle-points of this gravitational 
index have been discovered. These saddles encode the free energy of 
supersymmetric black holes. I will review these developments, focussing 
on four-dimensional black holes in asymptotically flat space. I will 
then show how a class of 5d solutions can be constructed using the 4d-5d 
lift. On one hand, these solutions compute the index of black holes and 
black strings in asymptotically flat 5d space, even in the absence of an 
AdS near-horizon region. On the other hand, a novel decoupling limit of 
the black string solution gives a finite-temperature BTZ black hole that 
computes the index in AdS3/CFT2.