Statut  Confirmé 
Série  PTIHES 
Domaines  hepth 
Date  Mercredi 2 Octobre 2024 
Heure  14:00 
Institut  IHES 
Salle  Amphithéâtre Léon Motchane 
Nom de l'orateur  David 
Prenom de l'orateur  Marina 
Addresse email de l'orateur  
Institution de l'orateur  Leuven 
Titre  NearExtremal Black Holes in Higher Derivative Theories of Gravity 
Résumé  : In this talk, I will show how one can study gravitational perturbations from the nearhorizon region of extremal and nearextremal rotating black holes in a general higherderivative extension of Einstein gravity. I will explain how the nearhorizon Teukolsky equation is modified via a correction to the angular separation constant. The nearhorizon region also provides constraints on the form of the full modified Teukolsky radial equation, which serve as a stepping stone towards the study of quasinormal modes of nearextremal black holes. In the second part of the talk, I will show how this EFT can be constrained, motivated by preserving two fundamental properties of GR: gravitational waves are nonbirefringent, and black hole quasinormal modes are isospectral. This leads to a novel class of EFT extensions, which remarkably, coincides with predictions from string theory and implies a previously unknown feature of string theory effective actions. 
Numéro de preprint arXiv  
Commentaires  Séminaire Amplitudes et Gravitation sur l'Yvette (IHES/IPhT) 
Fichiers attachés 
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