Long range correlations in the non-equilibrium quantum relaxation of a spin chain

Details Long range correlations in the non-equilibrium quantum relaxation of a spin chain Long range correlations in the non-equilibrium quantum relaxation of a spin chain

2000-03-11

arxiv.org/abs/cond-mat/0003193v1

Phys. Rev. Lett. 85, 3233 (2000)

Physics

Condensed Matter

Statistical Mechanics

4 pages RevTeX, 2 eps-figures included

Scientific paper

10.1103/PhysRevLett.85.3233

We consider the non-stationary quantum relaxation of the Ising spin chain in a transverse field of strength h. 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 $h$. 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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