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arXiv 1809.04285hep-phhep-th
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再论高斯波包形式中的粒子衰变

Particle decay in Gaussian wave-packet formalism revisited

Kenzo Ishikawa, Kin-ya Oda

摘要:

我们推导了由Ishikawa,Shimomura和Tobita提出的量子场论的高斯波包形式中的费米黄金法则,用于粒子在有限时间间隔内的衰变。我们提出了一个系统的程序来分离的批量贡献的时间边界,同时明显保持的$S$矩阵的酉性,不像在1951年由Stueckelberg的建议。我们还重新审视了黄金法则的偏离,并澄清它确实对应于边界贡献,尽管它们的物理意义尚未得到证实。

英文摘要:

We derive the Fermi's golden rule in the Gaussian wave-packet formalism of quantum field theory, proposed by Ishikawa, Shimomura, and Tobita, for the particle decay within a finite time interval. We present a systematic procedure to separate the bulk contribution from those of time boundaries, while manifestly maintaining the unitarity of the $S$-matrix unlike the proposal by Stueckelberg in 1951. We also revisit the suggested deviation from the golden rule and clarify that it indeed corresponds to the boundary contributions, though their physical significance is yet to be confirmed.

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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