Diffusion in disordered systems under iterative measurement

Details Diffusion in disordered systems under iterative measurement Diffusion in disordered systems under iterative measurement

1999-04-02

arxiv.org/abs/cond-mat/9904044v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

8 pages, 0 figures, LATEX. accepted in Phys.Rev.B

Scientific paper

10.1103/PhysRevB.60.30

We consider a sequence of idealized measurements of time-separation $\Delta t$ onto a discrete one-dimensional disordered system. A connection with Markov chains is found. For a rapid sequence of measurements, a diffusive regime occurs and the diffusion coefficient $D$ is analytically calculated. In a general point of view, this result suggests the possibility to break the Anderson localization due to decoherence effects. Quantum Zeno effect emerges because the diffusion coefficient $D$ vanishes at the limit $\Delta t \to 0$.

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