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arXiv 0811.3856cond-mat.stat-mechmath-phmath.MPphysics.data-anquant-ph
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Levy Flights、动力学对偶与分数量子力学

Levy flights, dynamical duality and fractional quantum mechanics

Piotr Garbaczewski

摘要:

我们讨论双时间演化的情况下,虽然根据相同的实时时钟运行,在每个考虑的情况下,可以相互映射的分析延续的时间。这种动力学对偶性是扩散型过程的一般特征。从技术上讲,这涉及到从非厄米的福克-普朗克算子到厄米算子(例如薛定谔哈密顿算子)的熟悉变换,已知厄米算子的负值会生成动力学半群。在对生成元的适当限制下,该半群容许在时间上的解析延拓,并最终产生对偶运动。我们分析了一个扩展的对偶概念利维航班,自由和外部强迫,而假设相应的演化规则(分数动力学半群)是一个对偶对应的量子运动(分数幺正动力学)。

英文摘要:

We discuss dual time evolution scenarios which, albeit running according to the same real time clock, in each considered case may be mapped among each other by means of an analytic continuation in time. This dynamical duality is a generic feature of diffusion-type processes. Technically that involves a familiar transformation from a non-Hermitian Fokker-Planck operator to the Hermitian operator (e.g. Schroedinger Hamiltonian), whose negative is known to generate a dynamical semigroup. Under suitable restrictions upon the generator, the semigroup admits an analytic continuation in time and ultimately yields dual motions. We analyze an extension of the duality concept to Levy flights, free and with an external forcing, while presuming that the corresponding evolution rule (fractional dynamical semigroup) is a dual counterpart of the quantum motion (fractional unitary dynamics).

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