Statut | Confirmé |
Série | PT-IHES |
Domaines | hep-th |
Date | Jeudi 22 Fevrier 2018 |
Heure | 11:00 |
Institut | IHES |
Salle | Amphithéâtre Léon Motchane |
Nom de l'orateur | Kundu |
Prenom de l'orateur | Sandipan |
Addresse email de l'orateur | |
Institution de l'orateur | Johns Hopkins University & IHES |
Titre | Three Lectures on Causality in Conformal Field Theory (1/3) |
Résumé | Causality places nontrivial constraints on QFT in Lorentzian signature, for example fixing the signs of certain terms in the low energy Lagrangian. In these pedagogical lectures, I will explore causality constraints on conformal field theory. First, I will show how causality is encoded in crossing symmetry and reflection positivity of Euclidean correlators, and derive constraints on the interactions of low-lying operators directly from the conformal bootstrap. Then, I will explain the connection between these causality constraints and the averaged null energy condition. Finally, I will use causality to show that the averaged null energy is positive in interacting quantum field theory in flat spacetime. Based on arXiv:1509.00014, arXiv:1601.07904, arXiv:1610.05308. |
Numéro de preprint arXiv | |
Commentaires | |
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