Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-LPTM-UCP
Subjects cond-mat
Date Wednesday 15 November 2017
Time 14:00
Institute LPTM
Seminar Room 4.13 St Martin II
Speaker's Last Name Navez
Speaker's First Name Patrick
Speaker's Email Address
Speaker's Institution Department of Physics, University of Crete (Rethymno)
Title “Expansion in large coordination number for the quantum Ising model”
Abstract 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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