Title: A compendium of logarithmic corrections in AdS/CFT
Speaker: Nikolay Bobev
Affiliation:Leuven University, Belgium (比利时鲁汶大学)
Time: 16:00-17:00, Friday, 15th November, 2024 (UTC+8, Beijing Time)
Venue: Zoom Meeting (ID: 385 442 0225; Passcode: yauc)
Inviter: Tadashi Okazaki
Abstract：
I will discuss logarithmic corrections to various CFT partition functions in the context of the AdS_4/CFT_3 correspondence for theories arising on the worldvolume of M2-branes. I will use four-dimensional gauged supergravity and heat kernel methods to derive general expressions for the logarithmic corrections to the gravitational on-shell action or black hole entropy for a number of different supergravity backgrounds. I will outline several subtleties and puzzles in these calculations and will show how they provide non-trivial precision tests of the AdS/CFT correspondence. These results have important implications for the existence of scale separated AdS vacua in string theory and for effective field theory in AdS more generally.
Bio:
Prof. Nikolay Bobev is a theoretical physicist working on string theory, supersymmetric quantum field theories and AdS/CFT correspondence. He got a Ph.D. at University of Southern California and worked at Simons Center for Geometry and Physics from 2010 to 2013 and at Perimeter Institute from 2013 to 2014. Thereafter he moved to KU Leuven and he is currently working as associate professor at KU Leuven.
The seminar will be broadcasted online by Zoom.
Interested people are free to join, without registration in advance.
The Zoom info is
URL: https://us02web.zoom.us/j/3854420225?pwd=SXY4eWJKOTBFZWJDaE16aXpTamY1QT09
Meeting ID: 385 442 0225
Passcode: yauc