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arXiv 1807.04403quant-phhep-thmath-phmath.MP
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贝特曼振子模型的两种量子化方法

Two quantization approaches to the Bateman oscillator model

Shinichi Deguchi, Yuki Fujiwara, Kunihiko Nakano

摘要:

我们考虑贝特曼振子模型的两种量子化方法。一种是Feshbach-Tikochinsky的量子化方法,在没有调用${\mathit{SU}(1,1)}$李代数的情况下简洁地重新表述,另一种是最初为Pais-Uhlenbeck振荡器模型开发的非线性标度量子化方法。后一种方法克服了前一种方法中遇到的能量谱无界的问题。在这两种方法中,哈密尔顿特征向量的平方范数的正定性得到了保证。与Feshbach-Tikochinsky的量子化方法不同,量子尺度量化方法允许除了衰减和增长状态之外还具有稳定状态。

英文摘要:

We consider two quantization approaches to the Bateman oscillator model. One is Feshbach-Tikochinsky's quantization approach reformulated concisely without invoking the ${\mathit{SU}(1,1)}$ Lie algebra, and the other is the imaginary-scaling quantization approach developed originally for the Pais-Uhlenbeck oscillator model. The latter approach overcomes the problem of unbounded-below energy spectrum that is encountered in the former approach. In both the approaches, the positive-definiteness of the squared-norms of the Hamiltonian eigenvectors is ensured. Unlike Feshbach-Tikochinsky's quantization approach, the imaginary-scaling quantization approach allows to have stable states in addition to decaying and growing states.

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