Statut | Confirmé |
Série | PT-IHES |
Domaines | hep-th |
Date | Mardi 21 Avril 2015 |
Heure | 14:30 |
Institut | IHES |
Salle | Amphithéâtre Léon Motchane |
Nom de l'orateur | Eynard |
Prenom de l'orateur | Bertrand |
Addresse email de l'orateur | |
Institution de l'orateur | IPhT CEA/Saclay & CRM Montréal |
Titre | CFTs, and the (quantum) geometry of integrable systems |
Résumé | It has been realized recently that the c=1 conformal block of 4 point function in Liouville CFT is related to the Tau function of the Painlevé 6 integrable system. Here we propose a general construction: starting from a very general integrable system (a Hitchin system: the moduli space of flat G-connections over a Riemann surface, with G an arbitrary semi-simple Lie group), we define some "amplitudes", and we show that these amplitudes satisfy all the axioms of a CFT: they satisfy OPEs, Ward identities and crossing symmetry. The construction is very geometrical, by defining a notion of "quantum spectral curve" attached to a flat connection, defining homology and cohomology on it, and showing that amplitudes satisfy Seiberg-Witten like relations, and behave well under modular transformations. So this link between CFTs and integrable systems unearths a new and beautiful quantum geometry. |
Numéro de preprint arXiv | |
Commentaires | |
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