Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
Date Jeudi 29 Fevrier 2024
Heure 10:00
Institut IHP
Salle 314 (Grisvard)
Nom de l'orateur Schafer-Nameki
Prenom de l'orateur Sakura
Addresse email de l'orateur
Institution de l'orateur Oxford
Titre Categorical Symmetries and Phases
Résumé Global symmetries can highly constrain the IR or QFTs. With the advent of non- invertible or categorical symmetries, a natural question is how these can characterize the IR phases -- both gapped and gapless. I will survey the so- called Symmetry Topological Field Theory (SymTFT) approach to answering this question. The proposal is applicable in general dimension, it provides a systematic classification of the gapped phases, as well as the order parameters -- thus generalizing the standard Landau paradigm. I will illustrate this approach in 1+1d theories with fusion category symmetries, describing all gapped phases with categorical symmetries and phase transitions between them.
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