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arXiv quant-ph/0309083quant-phnlin.CD
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混沌系统中量子轨道的动力学

Dynamics of quantum trajectories in chaotic systems

D. A. Wisniacki, F. Borondo, R. M. Benito

摘要:

德布罗意-玻姆理论中定义的量子轨道提供了一种解释物理现象的因果方法。在这封信中,我们使用这种形式主义来分析经典混沌系统中不稳定周期轨道引起的短时间动力学,这种情况下,疤痕是已知的发挥非常重要的作用。我们发现,量子轨道的拓扑结构要比疤痕和相关的周期轨道复杂得多,因为前者有量子干涉内置。因此,疤痕波函数是必要的分析相应的动力学。此外,这些拓扑结构意味着不同的返回路线附近的初始位置,这反映在存在不同的贡献,在每个峰值的生存概率函数。

英文摘要:

Quantum trajectories defined in the de Broglie--Bohm theory provide a causal way to interpret physical phenomena. In this Letter, we use this formalism to analyze the short time dynamics induced by unstable periodic orbits in a classically chaotic system, a situation in which scars are known to play a very important role. We find that the topologies of the quantum orbits are much more complicated than that of the scarring and associated periodic orbits, since the former have quantum interference built in. Thus scar wave functions are necessary to analyze the corresponding dynamics. Moreover, these topologies imply different return routes to the vicinity of the initial positions, and this reflects in the existence of different contributions in each peak of the survival probability function.

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