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arXiv quant-ph/0211106quant-ph
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谐振子、相干态和费曼路径积分

Harmonic Oscillator, Coherent States, and Feynman Path Integral

Dae-Yup Song

摘要:

本文回顾了广义谐振子的费曼路径积分,指出利用路径积分可以求出谐振子的完备波函数。具有不同(含时)参数的谐振子可以通过幺正变换联系起来。简谐振子广义相干态的存在性可以解释为在同一谐振子的幺正变换下的(形式){ \em不变性}的结果。在路径积分形式主义中,不变性反映在核不依赖于经典解的选择。

英文摘要:

The Feynman path integral for the generalized harmonic oscillator is reviewed, and it is shown that the path integral can be used to find a complete set of wave functions for the oscillator. Harmonic oscillators with different (time-dependent) parameters can be related through unitary transformations. The existence of generalized coherent states for a simple harmonic oscillator can then be interpreted as the result of a (formal) {\em invariance} under a unitary transformation which relates the same harmonic oscillator. In the path integral formalism, the invariance is reflected in that the kernels do not depend on the choice of classical solutions.

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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