Deformed integrable sigma models in string theory and AdS/CFT

by Stijn van Tongeren (HU Berlin)

Monday 19 Mar 2018, 13:15 → 14:15 Europe/Stockholm

132:028

Integrable models further our understanding in various areas of theoretical physics, including string theory and the AdS/CFT correspondence. The canonical example in this context is the AdS5xS5 superstring, where integrability makes it possible to obtain truly remarkable results. Hoping to apply the same powerful techniques in other instances of AdS/CFT, we can take two routes: look for integrability in known AdS/CFT dual models, or construct manifestly integrable models and look for an interpretation in string theory and AdS/CFT. I will take the second route and introduce a class of deformed integrable sigma models known as Yang-Baxter sigma models, and then discuss their interpretation in string theory in AdS/CFT. I will also discuss interesting challenges that arise when trying to approach these models at the quantum level using integrability.