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Anomalous diffusion among two-dimensional scatterers

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Anomalous diffusion among two-dimensional scatterers.pdf (1.232Mb)
Date
2010-12
Author
Yang, J. H.
Zhao, H.
赵鸿
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  • 物理技术-已发表论文 [4196]
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Abstract
In this study, we introduce a new model to study the particle diffusion among 2D scatterers. Different from previous models, the potential between the particle and scatterers consists of an attractive interaction as well as a repulsive one. The geometric arrangement of the scatterers has important effects on the diffusion behavior. In the case of periodic scatterers, the low-energy particles may show superdiffusive motion while the high-energy ones diffuse normally. In the case of random scatterers, the global subdiffusive motion may be observed in an energy region slightly above the localization threshold. The subdiffusion phenomenon is explored for the first time in Hamiltonian systems with deterministic scatterers. The mechanism of the observed diffusion behavior is linked to the stickiness effect of chaotic Hamiltonian systems.
Description
National Natural Science Foundation of China [10775115, 10975115, 10925525]; National Basic Research Program of China (973 Program) [2007CB814800]
Citation
Journal of Statistical Mechanics-Theory and Experiment, 2010-
URI
https://dspace.xmu.edu.cn/handle/2288/69910

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