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Statut Confirmé
Série SEM-LPTM-UCP
Domaines cond-mat
Date Mercredi 15 Novembre 2017
Heure 14:00
Institut LPTM
Salle 4.13 St Martin II
Nom de l'orateur Navez
Prenom de l'orateur Patrick
Addresse email de l'orateur
Institution de l'orateur Department of Physics, University of Crete (Rethymno)
Titre “Expansion in large coordination number for the quantum Ising model”
Résumé Quantum lattice systems are encountered in many fields of physics: solid states, ultracold gases, quantum optics, and metamaterials. For this class of systems, we establish a set of hierarchy equations describing the non equilibrium time evolution of the n-site spatial correlation reduced density matrices and solve it iteratively through a 1/Z expansion where Z is the coordination number. As an illustration of the powerfulness of this method, we focus on the particular study of quench dynamics of the quantum Ising model. We also show the potentiality of this method to solve the Bose and Fermi-Hubbard model where the latest is likely to describe the high Tc superconductivity.
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