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arXiv quant-ph/9904020quant-ph
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偏离指数律和Van Hove的"λ ^2 t"极限

Deviations from exponential law and Van Hove's "λ^2 t" limit

P. Facchi, S. Pascazio

摘要:

根据范霍夫的"λ ^2 t"极限方法,分析了衰变过程中偏离纯指数行为的情况。我们的注意力集中在当耦合常数很小但不为零时所产生的效应上。我们首先考虑一个简单的模型(二能级原子与电磁场的相互作用),然后逐步扩展我们的分析到一个更一般的框架。我们估计所有偏离指数行为的领先订单的耦合常数。

英文摘要:

The deviations from a purely exponential behavior in a decay process are analyzed in relation to Van Hove's "λ^2 t" limiting procedure. Our attention is focused on the effects that arise when the coupling constant is small but nonvanishing. We first consider a simple model (two-level atom in interaction with the electromagnetic field), then gradually extend our analysis to a more general framework. We estimate all deviations from exponential behavior at leading orders in the coupling constant.

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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