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 | |
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