Hi everybody, This *Friday 28th at 11:30 in Aula I8 (notice unusual place)* we will keep on going with the Cordas-Club. *Sibylle Driezen* will finish with the second part of last day's session, i.e. the paper* "Integrable E-models, 4d Chern-Simons theory and Affine Gaudin Models" *by Sylvain Lacroix and Benoit Vicedo. . *Abstract:* These researchers belong to a group of people that try to describe 2-dimensional integrable field theories in a general and rigorous way. Recently they have been employing the framework of 4d Chern Simons (CS) theory, proposed by Costello and Yamazaki (https://arxiv.org/abs/1908.02289) in order to do so. In this paper they show that in a very general set-up, the 2d reduced theories from 4d CS are naturally captured by integrable E-models. This is quite interesting because the latter have been introduced by Klimcik and Severa ('95 -- '97) to make Poisson-Lie T-duality of sigma model manifest, which is a more general notion of conventional T-duality. This paper therefore adds another interesting connection between integrability and generalised dualities. After motivating several of these concepts, and perhaps illustrate some with a simple example, I will sketch their methods and results briefly in view of time. *References:* * https://arxiv.org/abs/2011.13809 <https://arxiv.org/abs/2011.13809>* *Covid restrictions:* The room is big and we can safely keep a distance from each other, but of course all protocols are to be respected and masks will be mandatory for all attendants. *Broadcast details* The meeting will be held in the open source platform JITSI https://meet.jit.si/CordasClub Add event to calendar [image: Apple] <https://www.addevent.com/event/Rh6688145+apple> [image: Google] <https://www.addevent.com/event/Rh6688145+google> [image: Office 365] <https://www.addevent.com/event/Rh6688145+office365> [image: Outlook] <https://www.addevent.com/event/Rh6688145+outlook> [image: Outlook.com] <https://www.addevent.com/event/Rh6688145+outlookcom> [image: Yahoo] <https://www.addevent.com/event/Rh6688145+yahoo> See you there! Javi