Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série SEM-LPTMC
Domaines cond-mat.mes-hall
Date Lundi 2 Décembre 2019
Heure 10:45
Institut LPTMC
Salle campus Jussieu, tower 13-12, 5th floor, room 523
Nom de l'orateur De Nardis
Prenom de l'orateur Jacopo
Addresse email de l'orateur jacopo [dot] denardis [at] ugent [dot] be
Institution de l'orateur Université de Gand, Belgique
Titre Diffusion and super-diffusion in quantum and classical chains
Résumé I will review the recent progresses in extracting an emergent hydrodynamic description of interacting many-body quantum integrable systems valid at large time and space scales from the underlying microscopic unitary time evolution. In particular, I will show how to extract non-trivial hydrodynamic quantities characterising transport dynamics as such as diffusion constants and Drude weights. I will then focus on those cases where the diffusion constant of the charge associated with non-abelian symmetries (i.e. SU(2) symmetry) diverges at finite temperatures, leading to anomalous super-diffusive transport in isotropic spin chains with charge fluctuations falling within the KPZ universality class. This puzzling phenomena has been nowadays detected in different integrable quantum and classical interacting chains but also non-integrable quantum chains and an accurate and general understanding is still under research.
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