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Statut |
Confirmé |
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Série |
IPHT-MAT |
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Domaines |
hep-th |
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Date |
Mercredi 15 Novembre 2017 |
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Heure |
14:15 |
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Institut |
IPHT |
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Salle |
Salle Claude Itzykson, Bât. 774 |
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Nom de l'orateur |
Sebastian Garcia-Saenz |
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Prenom de l'orateur |
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Addresse email de l'orateur |
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Institution de l'orateur |
Institut d'Astrophysique de Paris |
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Titre |
Phonons in holographic superfluids and solids |
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Résumé |
After reviewing the gravitational dual of superfluids in the context of AdS/CFT, I will describe an analytical method to derive the low-energy 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 low-energy 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 solid-to-liquid phase transition on the field theory side. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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