Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série STR-LPT-ENS-HE
Domaines hep-th
Date Mardi 1 Décembre 2015
Heure 11:00
Institut LPTENS
Salle bibliothèque du LPTENS
Nom de l'orateur Goutéraux
Prenom de l'orateur Blaise
Addresse email de l'orateur
Institution de l'orateur
Titre Effective holographic theories of thermoelectric transport
Résumé n this talk, I will summarize recent progress in the description of thermoelectric transport using gauge/gravity duality. I will first review thermoelectric transport in hydrodynamics, where momentum conservation implies infinite zero frequency conductivities. By a change of basis of the conserved currents, a universal, finite conductivity can be extracted. It can be computed holographically. I will discuss its low-temperature scaling in terms of critical exponents characterizing time and space anisotropy and anomalous dimensions for the free energy and conserved current. When momentum is almost conserved, the zero-frequency delta functions broaden into Drude-like peaks. A holographic computation precisely identifies the redistribution of the low-frequency spectral weight between two contributions originating from the non-conservation of momentum and intrinsic dissipation respectively.
Numéro de preprint arXiv
Commentaires
Fichiers attachés

Pour obtenir l' affiche de ce séminaire : [ Postscript | PDF ]

[ Annonces ]    [ Abonnements ]    [ Archive ]    [ Aide ]    [ ]
[ English version ]