摘要翻译:
在多元Langevin过程的基础上,我们给出了Levy飞行作为一个连续过程的实现。对于质点在摩擦力和速度相关随机力作用下运动的简单情况,我们显式地导出了描述Levy飞行的广义Langevin方程和相应的广义Fokker-Planck方程。我们的过程类似于Smoluchowski极限下Kramers-Fokker-Planck方程的处理。提出的方法为解决非均匀介质或有边界系统中的Levy飞行问题提供了一种可行的方法,这是迄今为止一个具有挑战性的问题。
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英文标题:
《Realization of Levy flights as continuous processes》
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作者:
Ihor Lubashevsky, Rudolf Friedrich, Andreas Heuer
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Physics 物理学
二级分类:Materials Science 材料科学
分类描述:Techniques, synthesis, characterization, structure. Structural phase transitions, mechanical properties, phonons. Defects, adsorbates, interfaces
技术,合成,表征,结构。结构相变,力学性质,声子。缺陷,吸附质,界面
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英文摘要:
On the basis of multivariate Langevin processes we present a realization of Levy flights as a continuous process. For the simple case of a particle moving under the influence of friction and a velocity dependent stochastic force we explicitly derive the generalized Langevin equation and the corresponding generalized Fokker-Planck equation describing Levy flights. Our procedure is similar to the treatment of the Kramers-Fokker Planck equation in the Smoluchowski limit. The proposed approach forms a feasible way of tackling Levy flights in inhomogeneous media or systems with boundaries what is up to now a challenging problem.
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PDF链接:
https://arxiv.org/pdf/706.432


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