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arXiv 2005.14558hep-th
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光学定理与有效action:QFT中旧结果的新证明

Optical theorem and effective action: new proofs of old results in QFT

Sergio L. Cacciatori, Andrea Zanzi

摘要:

给出了全阶光学定理的一个新证明。虽然这个定理是量子场论中的一个著名结果,但我们的证明是有趣的,因为它特别简单。事实上,这个定理是温伯格在剑桥的书中讨论的极点学形式主义的直接结果。我们还讨论了一个新的证明标准结果的有效作用作为生成功能的1PI贡献。

英文摘要:

A new proof of the optical theorem at all orders is presented. Although the theorem is a well-known result in Quantum Field Theory, our proof is interesting because it is particularly simple. Indeed, the theorem is a direct consequence of the pole-ology formalism discussed in Weinberg's Cambridge books. We also discuss a new proof of the standard result concerning the effective action as generating functional of 1PI contributions.

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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