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Stationary Behavior of Observables after a Quantum Quench

Maurizio Fagotti, Oxford University, UK

06.12.2013 at 10:15 

 

I consider the nonequilibrium time evolution (quantum quench) of a class of pure states under the Hamiltonian of an integrable model. At late times after the quench, it is believed that the expectation values of local operators approach time-independent values that are described by a generalized Gibbs ensemble. I discuss some important features of the stationary state. Then, I present some recent results on the stationary behavior of short-range correlators in the spin-1/2 XXZ chain.

 

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