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arXiv math-ph/0509027math-phmath.MP
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重新审视二次量子汉密尔顿

Quadratic Quantum Hamiltonians revisited

Monique Combescure, Didier Robert

摘要:

含时二次哈密顿量在经典力学和量子力学中也是众所周知的。特别是对他们来说,经典力学和量子力学之间的对应是精确的。但显式公式是不平凡的(如Mehler公式)。此外,二次哈密顿量的良好知识对于研究更一般的量子哈密顿量和相关的半经典区域中的薛定谔方程是非常有用的。我们的目标是在这里给我们自己的介绍这个重要的主题。我们把重点放在高斯相干态的计算。我们这样做的主要动机是应用有关复兴和Loschiral回声。

英文摘要:

Time dependent quadratic Hamiltonians are well known as well in classical mechanics and in quantum mechanics. In particular for them the correspondance between classical and quantum mechanics is exact. But explicit formulas are non trivial (like the Mehler formula). Moreover, a good knowlege of quadratic Hamiltonians is very useful in the study of more general quantum Hamiltonians and associated Schrödinger equations in the semiclassical regime. Our goal here is to give our own presentation of this important subject. We put emphasis on computations with Gaussian coherent states. Our main motivation to do that is application concerning revivals and Loschmidt echo.

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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