Macroscopic Effects of Localized 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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Bibliographic Details
Published in:Physical review letters 2022-04, Vol.128 (13), p.130603-130603, Article 130603
Main Authors: Bidzhiev, Kemal, Fagotti, Maurizio, Zadnik, Lenart
Format: Article
Language:English
Subjects:
General Physics
Physics
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Summary: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 localized 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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.128.130603