Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-LPTM-UCP
Subjects quant-ph
Date Thursday 27 April 2017
Time 14:00
Institute LPTM
Seminar Room 4.13 St Martin II
Speaker's Last Name Fagotti
Speaker's First Name Maurizio
Speaker's Email Address
Speaker's Institution LPT ENS Paris
Title Intermediate-time dynamics in 
out-of-equilibrium spin chains
Abstract 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.
arXiv Preprint Number

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