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arXiv quant-ph/0603073quant-phcond-mat.other
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矢势与Berry相诱导力

Vector Potential and Berry phase-induced Force

Qi Zhang, Biao Wu

摘要:

我们提出了一个一般的理论框架,精确处理的混合系统,是由一个量子子系统和一个经典的子系统。当量子子系统是动态快的,经典子系统是缓慢的,一个矢量势产生一个简单的正则变换。这个矢量势一方面在快量子动力学中产生了我们熟悉的Berry相;另一方面,它在慢经典动力学中产生了类似洛伦兹的力。这样,波函数的纯相位(Berry相位)就与物理力联系在一起。

英文摘要:

We present a general theoretical framework for the exact treatment of a hybrid system that is composed of a quantum subsystem and a classical subsystem. When the quantum subsystem is dynamically fast and the classical subsystem is slow, a vector potential is generated with a simple canonical transformation. This vector potential, on one hand, gives rise to the familiar Berry phase in the fast quantum dynamics; on the other hand, it yields a Lorentz-like force in the slow classical dynamics. In this way, the pure phase (Berry phase) of a wavefunction is linked to a physical force.

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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