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arXiv quant-ph/0412159quant-ph
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混沌的量子涌现

The Quantum Emergence of Chaos

Salman Habib, Kurt Jacobs, Kosuke Shizume

摘要:

孤立量子系统的动力学状态,部分是由于薛定谔方程的线性,是不清楚的:传统的措施无法检测到这种系统中的混沌。然而,当量子系统受到观测时--所有实验系统都必须如此--它们的动力学不再是线性的,并且在适当的极限下,以观测为条件的期望值的演化非常接近经典轨迹的行为。在这里,我们通过分析一个具体的例子表明,微观连续观察的量子系统,即使远离任何经典的限制,可以有一个积极的李雅普诺夫指数,因此是真正的混沌。

英文摘要:

The dynamical status of isolated quantum systems, partly due to the linearity of the Schrodinger equation is unclear: Conventional measures fail to detect chaos in such systems. However, when quantum systems are subjected to observation -- as all experimental systems must be -- their dynamics is no longer linear and, in the appropriate limit(s), the evolution of expectation values, conditioned on the observations, closely approaches the behavior of classical trajectories. Here we show, by analyzing a specific example, that microscopic continuously observed quantum systems, even far from any classical limit, can have a positive Lyapunov exponent, and thus be truly chaotic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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