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arXiv 0804.3317quant-ph
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一个具有精确显式解析解的量子衰变模型

A quantum decay model with exact explicit analytical solution

Avi Marchewka, Er'el Granot

摘要:

介绍了一个简单的衰减模型。该模型包括一个点势阱,它经历了突变。由于时间的变化,初始量子态可以从阱中逃逸,也可以作为新的束缚态保持局域化。该模型允许一个精确的分析解决方案,同时具有必要的功能的衰减过程。结果表明,衰减从来不是指数,经典动力学预测。此外,在短时间内的衰变有一个\textit{fractional}的权力法律,这不同于微扰量子方法的预测。

英文摘要:

A simple decay model is introduced. The model comprises of a point potential well, which experiences an abrupt change. Due to the temporal variation the initial quantum state can either escape from the well or stay localized as a new bound state. The model allows for an exact analytical solution while having the necessary features of a decay process. The results show that the decay is never exponential, as classical dynamics predicts. Moreover, at short times the decay has a \textit{fractional} power law, which differs from perturbation quantum methods predictions.

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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