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arXiv 1005.0231hep-thhep-ph
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Goldstino场的首阶作用量

Leading-Order Actions of Goldstino Fields

Haishan Liu, Hui Luo, Mingxing Luo, Liucheng Wang

摘要:

本文首先讨论了传统上被认为是Goldstino场首阶作用量的Akulov-Volkov作用量S_AV。给出了S_AV及其手征形式S_AV^ch的显式表达式。然后,我们转向的问题,这些行动是如何相关的新提出的约束超场形式主义中提出的领导阶行动S_NL。我们表明,S_NL可能产生S_AV/S_AV^ch或一个完全不同的行动S_KS,这取决于如何在前者的辅助字段是集成了。然而,S_KS和S_AV/S_AV^ch总是产生相同的S矩阵元素,正如人们从量子场论的一般考虑中所预期的那样。

英文摘要:

This paper starts with a self-contained discussion of the so-called Akulov-Volkov action S_AV, which is traditionally taken to be the leading-order action of Goldstino field. Explicit expressions for S_AV and its chiral version S_AV^ch are presented. We then turn to the issue on how these actions are related to the leading-order action S_NL proposed in the newly proposed constrained superfield formalism. We show that S_NL may yield S_AV/S_AV^ch or a totally different action S_KS, depending on how the auxiliary field in the former is integrated out. However, S_KS and S_AV/S_AV^ch always yield the same S-matrix elements, as one would have expected from general considerations in quantum field theory.

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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