Statut  Confirmé 
Série  RENCTHEO 
Domaines  hepth 
Date  Jeudi 27 Octobre 2016 
Heure  11:45 
Institut  IHP 
Salle  314 
Nom de l'orateur  Thompson 
Prenom de l'orateur  Daniel 
Addresse email de l'orateur  
Institution de l'orateur  VUB 
Titre  Generalised Duality, Integrability and Resurgence 
Résumé  Tduality in string theory and integrability in holography have a rich interplay. Here I will review some recent developments that expand this theme making crucial use of generalised Tdualities. After giving some review of these generalised notions of Tduality, I will comment on recent progress relating nonAbelian Tduality to integrable marginal deformations of holography and the use of Poisson Lie Tduality in constructing new integrable string models known as eta and lambda deformations. This novel class of theories have been conjectured to encode quantum group deformations of holography. In the second part of the talk I will focus on a particular example of an eta deformed sigma model and describe how it displays the remarkable phenomenon of "resurgence": the way deeply nonperturbative physics can be encoded in perturbative data. Time permitting I will also outline an intriguing connection between the eta deformed sigma model and Stokes phenomena in a mass deformed 4d N=2 gauge theory. 
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