Quantum relaxation after a quench in systems with boundaries

Details Quantum relaxation after a quench in systems with boundaries Quantum relaxation after a quench in systems with boundaries

2010-11-16

arxiv.org/abs/1011.3664v2

Phys. Rev. Lett. 106, 035701 (2011)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.106.035701

We study the time-dependence of the magnetization profile, m_l(t), of a large finite open quantum Ising chain after a quench. We observe a cyclic variation, in which starting with an exponentially decreasing period the local magnetization arrives to a quasi-stationary regime, which is followed by an exponentially fast reconstruction period. The non-thermal behavior observed at near-surface sites turns over to thermal behavior for bulk sites. Besides the standard time- and length-scales a non-standard time-scale is identified in the reconstruction period.

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