Macroscopic effects of localised measurements in jammed states of quantum spin chains

A quantum jammed state can be seen as a state where the phase space available to particles shrinks to zero, an interpretation quite accurate in integrable systems, where stable quasiparticles scatter elastically. We consider the integrable dual folded XXZ model, which is equivalent to the XXZ model...

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Published in:arXiv.org 2021-12
Main Authors: Bidzhiev, Kemal, Fagotti, Maurizio, Zadnik, Lenart
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Language:English
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Anisotropy
Elementary excitations
Jamming
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Fagotti, Maurizio
Zadnik, Lenart
description A quantum jammed state can be seen as a state where the phase space available to particles shrinks to zero, an interpretation quite accurate in integrable systems, where stable quasiparticles scatter elastically. We consider the integrable dual folded XXZ model, which is equivalent to the XXZ model in the limit of large anisotropy. We perform a jamming-breaking localised measurement in a jammed state. We find that jamming is locally restored, but local observables exhibit nontrivial time evolution on macroscopic, ballistic scales, without ever relaxing back to their initial values.
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subjects Anisotropy
Elementary excitations
Jamming
title Macroscopic effects of localised measurements in jammed states of quantum spin chains
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