Pasquale Calabrese, Fabian H. L. Essler, Maurizio Fagotti
Published 2012-05-10, updated 2013-02-27Version 2
We consider the stationary state properties of the reduced density matrix as well as spin-spin correlation functions after a sudden quantum quench of the magnetic field in the transverse field Ising chain. We demonstrate that stationary state properties are described by a generalized Gibbs ensemble. We discuss the approach to the stationary state at late times.
Comments: 30 pages, 6 figures
Journal: J. Stat. Mech. (2012) P07022
Reduced Density Matrix after a Quantum Quench
Universal fluctuations of reduced density matrices in maximally noisy or ergodic quantum systems and typicality
Fluctuation-dissipation relations and critical quenches in the transverse field Ising chain
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