Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines cond-mat.stat-mech
Date Mercredi 11 Décembre 2019
Heure 12:00
Institut LPENS
Salle Conf. IV
Nom de l'orateur Tagliacozzo
Prenom de l'orateur Luca
Addresse email de l'orateur
Institution de l'orateur University of Barcelona
Titre On the quest for universality in the out-of-equilibrium dynamics of quantum systems.
Résumé In this talk I will review the relationship among robust physical phenomena and our ability to describe them with approximate numerical methods. I will use tensor networks as a paradigmatic example. I will show that even though tensor network methods are designed to work for slightly entangled states, they can be used as an approximate tool in the scaling region of a quantum critical point. There the constituents are strongly entangled. Out of equilibrium, tensor networks algorithms typically fail due to the large amount of entanglement that is generated among the constituents. However, if we are able to identify the equivalent of a scaling region, we can try to use tensor networks (or other approximate algorithms) in order to characterize the universal part of the dynamics. I will discuss partial results in this direction.
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