Long-Range Correlations in the Nonequilibrium Quantum Relaxation of a Spin Chain
- 9 October 2000
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 85 (15), 3233-3236
- https://doi.org/10.1103/physrevlett.85.3233
Abstract
We consider the nonstationary quantum relaxation of the Ising spin chain in a transverse field of strength . Starting from a homogeneously magnetized initial state the system approaches a stationary state by a process possessing quasi-long-range correlations in time and space, independent of the value of . In particular, the system exhibits aging (or lack of time-translational invariance on intermediate time scales) although no indications of coarsening are present.
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