Week 11.11.2017 – 19.11.2017

Tuesday

Aspects of eta and lambda models and generalised T-duality

Regular Seminar Daniel Thompson (Swansea U.)

at:
16:00 QMW
room G O Jones 610
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

Wednesday

Polygon Seminar: Dualities in d=2+1 Dimensions

Triangular Seminar David Tong (DAMTP)

at:
15:00 QMW
room GO Jones Lecture Theatre
abstract:

I'll give a basic introduction to particle-vortex duality in d=2+1 dimensions and its relation to 3d bosonization.

Black Hole Microstates in String Theory

Regular Seminar David Turton (Southampton University)

at:
13:15 KCL
room K4.31
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.

Thursday

Quantum Gravity from Conformal Field Theory

Regular Seminar James Drummond (U. Southampton)

at:
14:00 QMW
room G O Jones 610
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.

Friday

King's Journal Club

Journal Club Alejandro Cabo Bizet (KCL)

at:
16:00 KCL
room S4.23
abstract:

Discuss 1710.09580