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Statut |
Confirmé |
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Série |
PT-IHES |
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Domaines |
hep-th |
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Date |
Lundi 23 Octobre 2023 |
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Heure |
14:00 |
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Institut |
IHES |
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Salle |
Amphithéâtre Léon Motchane |
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Nom de l'orateur |
Cardy |
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Prenom de l'orateur |
John |
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Addresse email de l'orateur |
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Institution de l'orateur |
All Souls College and IHES |
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Titre |
Bulk Renormalization Group Flows and Boundary States in Conformal Field Theories |
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Résumé |
We propose using smeared boundary states as variational approximations to the ground state of a conformal field theory deformed by relevant bulk operators. This is motivated by recent studies of quantum quenches in CFTs and of the entanglement spectrum in massive theories. It gives a simple criterion for choosing which boundary state should correspond to which combination of bulk operators, and leads to a rudimentary phase diagram of the theory in the vicinity of the RG fixed point corresponding to the CFT, as well as rigorous upper bounds on the universal amplitude of the free energy. In the case of the 2d minimal models explicit formulae are available. As a side result we show that the matrix elements of bulk operators between smeared Ishibashi states are simply given by the fusion rules of the CFT. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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