From laser cooling to aging: a unified Levy flight description

Details From laser cooling to aging: a unified Levy flight description From laser cooling to aging: a unified Levy flight description

2005-03-07

arxiv.org/abs/cond-mat/0503150v2

Am. J. Phys. 76, 630 (2008)

Physics

Condensed Matter

Statistical Mechanics

8 pages, 2 figures; accepted for publication in American Journal of Physics

Scientific paper

10.1119/1.2888543

Intriguing phenomena such as subrecoil laser cooling of atoms, or aging phenomenon in glasses, have in common that the systems considered do not reach a steady-state during the experiments, although the experimental time scales are very large compared to the microscopic ones. We revisit some standard models describing these phenomena, and reformulate them in a unified framework in terms of lifetimes of the microscopic states of the system. A universal dynamical mechanism emerges, leading to a generic time-dependent distribution of lifetimes, independently of the physical situation considered.

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