YTF 23

Session

String Theory

15 Dec 2023, 11:00

Ph8 (Centre for Particle Theory)

Description

Chair: Rūdolfs Treilis

4. Understanding the target space of string theory at large alpha'

Nathan McStay (University of Cambridge)

15/12/2023, 11:00

Long Talk (20 mins)

As a theory of quantum gravity, string theory is defined perturbatively around a fixed background metric. We quantify these perturbations to the metric using the inverse string tension, alpha'. We usually consider the supergravity limit of small alpha', yet it known to be possible to study beyond this regime when the background takes the form of a group manifold, such as AdS3. In this talk, I...

8. Courant Algebroid Relations and T-duality

Thomas De Fraja (Heriot-Watt University)

15/12/2023, 11:30

Long Talk (20 mins)

We develop a new approach to T-duality based on Courant algebroid relations which subsumes the usual T-duality as well as its various generalisations. We introduce the relation associtated to Courant algebroid reduction, and describe how to transfer the information of generalised metrics through the reduction, via transverse generalised metrics and isometries. This is used to construct T-dual...