Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série SEM-LPTM-UCP
Domaines quant-ph
Date Jeudi 27 Avril 2017
Heure 14:00
Institut LPTM
Salle 4.13 St Martin II
Nom de l'orateur Fagotti
Prenom de l'orateur Maurizio
Addresse email de l'orateur
Institution de l'orateur LPT ENS Paris
Titre Intermediate-time dynamics in 
out-of-equilibrium spin chains
Résumé In the first part of the talk, I consider the non-equilibrium time evolution of piecewise homogeneous states in the XXZ spin-1/2 chain. I overview the solution to the dynamics in the limit of large time and discuss some remarkable properties of the profiles of charges and currents. In the second part of the talk, I describe an unusual mechanism of prethermalization, based on the presence of a symmetry of the pre-quench Hamiltonian which is spontaneously broken at zero temperature and is explicitly broken by the post-quench Hamiltonian.
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