Triangle Seminars
Tuesday, 14 Nov 2017
Aspects of eta and lambda models and generalised T-duality
Daniel Thompson
(Swansea U.)
Abstract:
In this talk I shall give a review of two classes of integrable non-linear sigma models called \eta and \lambda deformations. Three reasons to be interested are 1) these are interesting examples of relatively rare integrable QFT displaying quantum group symmetries; 2) viewed as string theory sigma models they may have application to N=4 SYM via holography and 3) they provide concrete examples for generalised notions of T-duality. This talk will describe a variety of classical and quantum properties of these theories and their multi-parameter extensions drawing in part on arXiv:1711.00084; arXiv:1706.05322
In this talk I shall give a review of two classes of integrable non-linear sigma models called \eta and \lambda deformations. Three reasons to be interested are 1) these are interesting examples of relatively rare integrable QFT displaying quantum group symmetries; 2) viewed as string theory sigma models they may have application to N=4 SYM via holography and 3) they provide concrete examples for generalised notions of T-duality. This talk will describe a variety of classical and quantum properties of these theories and their multi-parameter extensions drawing in part on arXiv:1711.00084; arXiv:1706.05322
Posted by: QMW
Wednesday, 15 Nov 2017
Black Hole Microstates in String Theory
📍 London
David Turton
(Southampton University)
Abstract:
The Information Paradox represents a strong consistency challenge for any quantum theory of gravity. The study of black hole internal structure in String Theory offers the potential to resolve this paradox. I will give an overview of recent work on constructing families of smooth horizonless supergravity solutions describing black hole microstates. Where applicable, I will present a holographic description of these solutions. I will also discuss the physics of an observer falling into a black hole.
The Information Paradox represents a strong consistency challenge for any quantum theory of gravity. The study of black hole internal structure in String Theory offers the potential to resolve this paradox. I will give an overview of recent work on constructing families of smooth horizonless supergravity solutions describing black hole microstates. Where applicable, I will present a holographic description of these solutions. I will also discuss the physics of an observer falling into a black hole.
Posted by: KCL
Polygon Seminar: Dualities in d=2+1 Dimensions
David Tong
(DAMTP)
Abstract:
I'll give a basic introduction to particle-vortex duality in d=2+1 dimensions and its relation to 3d bosonization.
I'll give a basic introduction to particle-vortex duality in d=2+1 dimensions and its relation to 3d bosonization.
Posted by: QMW
Thursday, 16 Nov 2017
Quantum Gravity from Conformal Field Theory
James Drummond
(U. Southampton)
Abstract:
I will describe how to recast perturbative quantumgravity using non-perturbative techniques from conformal field theory,focussing on the case of N=4 super Yang-Mills theory. By resolving thedegeneracy among double trace operators at large N we are able to bootstrapone-loop supergravity corrections from the OPE of the CFT.
I will describe how to recast perturbative quantumgravity using non-perturbative techniques from conformal field theory,focussing on the case of N=4 super Yang-Mills theory. By resolving thedegeneracy among double trace operators at large N we are able to bootstrapone-loop supergravity corrections from the OPE of the CFT.
Posted by: QMW
Friday, 17 Nov 2017
King's Journal Club
📍 London
Alejandro Cabo Bizet
(KCL)
Abstract:
Discuss 1710.09580
Discuss 1710.09580
Posted by: KCL