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arXiv quant-ph/0605109quant-phcond-mat.other
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双势垒量子结构中的全时非指数衰减

Full time nonexponential decay in double-barrier quantum structures

Gaston Garcia-Calderon, Jorge Villavicencio

摘要:

我们研究了量子衰变时间演化的生存概率的解析表达式,讨论了量子衰变在任何时候都是非指数的制度。我们发现,生存振幅的指数和非指数项之间的干扰修改通常的指数衰减制度的共振能量的衰减宽度的比率,是小于0.3的系统。我们认为,在适当的参数下,半导体双势垒共振量子结构中可以观察到这种机制。

英文摘要:

We examine an analytical expression for the survival probability for the time evolution of quantum decay to discuss a regime where quantum decay is nonexponential at all times. We find that the interference between the exponential and nonexponential terms of the survival amplitude modifies the usual exponential decay regime in systems where the ratio of the resonance energy to the decay width, is less than 0.3. We suggest that such regime could be observed in semiconductor double-barrier resonant quantum structures with appropriate parameters.

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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