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TT: Fachverband Tiefe Temperaturen
TT 65: Low-Dimensional Systems: 1D – Theory
TT 65.10: Vortrag
Mittwoch, 18. März 2015, 17:45–18:00, H 0104
Work distribution in quantum quenches of the anistoropic Heisenberg (XXZ) chain — •Paolo Pietro Mazza1, Elena Canovi2, Vincenzo Alba3, and Masudul Haque4 — 1Max Planck Institute for Physics of Complex Systems, Dresden — 2Max Planck Research Department for Structural Dynamics, University of Hamburg-CFEL, Hamburg — 3Department of Physics and Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität Munich — 4Max Planck Institute for Physics of Complex Systems, Dresden
An important feature of a quantum quench is the distribution of overlaps of the initial state with the eigenstates of the final Hamiltonian. This distribution of overlaps is closely related to the distribution of work done in a quantum quench. We will present a study of the overlap distribution in the XXZ spin chain. We will consider quenches of the anisotropy parameter and describe which eigenstates get excited in such quenches.