Statut  Confirmé 
Série  IPHTMAT 
Domaines  hepth 
Date  Mercredi 15 Novembre 2017 
Heure  14:15 
Institut  IPHT 
Salle  Salle Claude Itzykson, Bât. 774 
Nom de l'orateur  Sebastian GarciaSaenz 
Prenom de l'orateur  
Addresse email de l'orateur  
Institution de l'orateur  Institut d'Astrophysique de Paris 
Titre  Phonons in holographic superfluids and solids 
Résumé  After reviewing the gravitational dual of superfluids in the context of AdS/CFT, I will describe an analytical method to derive the lowenergy spectrum of the boundary theory. The result confirms that, at zero temperature, the effective theory consists of a longitudinal phonon with the correct speed of sound. I will next move on to consider the EFT of solids and use it to motivate the construction of a holographic dual. Here too we are able to derive the correct lowenergy effective theory of the phonons in a conformally invariant solid. Lastly we obtain some numerical solutions including backreaction and calculate the free energy, finding evidence that the system ``melts'' into a black hole as the temperature is raised, which we interpret as a solidtoliquid phase transition on the field theory side. 
Numéro de preprint arXiv  
Commentaires  
Fichiers attachés 
Pour obtenir l' affiche de ce séminaire : [ Postscript  PDF ]

[ English version ] 