Luis Apolo博士学术报告
Title: Strings on AdS3, TsT transformations, and irrelevant deformations
Speaker: Luis Apolo
Affiliation: University of Amsterdam
Time: 16:00-17:00, Tuesday, 24th May, 2022 (UTC+8, Beijing Time)
Venue: Zoom Meeting
Inviter: Jianfei XU (许剑飞)
Abstract
In this talk I will describe toy models of holography for non-AdS spacetimes that are obtained by deforming the bulk and boundary sides of the AdS3/CFT2 correspondence. In the bulk we consider string theory on AdS3 supported by NS-NS flux and perform a marginal deformation of the worldsheet action by the antisymmetric product of two Noether currents. We show that such marginal deformations are equivalent to TsT transformations of the background geometry. Depending on the choice of these currents we can obtain asymptotically flat or asymptotically warped AdS spacetimes. On the boundary side, these deformations have been argued to correspond to single-trace irrelevant deformations of two-dimensional CFTs that include the TTbar, JTbar, TJbar deformations or any linear combinations of them. We check that the perturbative spectrum of strings on the TsT-transformed backgrounds, the thermodynamics of black holes, and properties of the ground state geometry match those of the boundary theories.
About the Speaker
Luis Apolo is currently a postdoctoral researcher at the University of Amsterdam. He received the Ph.D. degree from New York University in 2014. Then he worked as postdoc at Stockholm University (2014-2017) and at Tsinghua University (2017-2020) and as assistant researcher at Beijing Institute of Mathematical Sciences and applications (2020-2021).
His research focuses on quantum and classical theories of gravity, conformal field theories, and their relationship via the AdS/CFT correspondence.
More information could be found on his personal page: https://lui-apolo.github.io/
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