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arXiv 1703.04584hep-thhep-phmath-phmath.MP
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Lee-Wick量子场论的一种新表述

A new formulation of Lee-Wick quantum field theory

Damiano Anselmi, Marco Piva

摘要:

李-威克模型是高阶导数理论,由于一种特殊的抵消机制,它们被认为是幺正的。在本文中,我们提供了一个新的配方的模型,澄清了几个方面,仍然相当神秘,到目前为止。具体来说,我们定义为nonanalytically威克旋转欧几里得理论。复杂的能量平面被划分为不连续的区域,这些区域可以通过一个定义明确的非分析过程相互关联。在通用洛伦兹框架中工作,这些模型本质上配备了正确的配方来处理李-威克极点的箍缩,而不需要外部的特别处方。我们通过计算单圈气泡图并解释关键属性如何推广到更复杂的图来详细描述这些功能。我们公式化的物理结果与以前的不同。物理振幅的不寻常行为导致有趣的唯象预测。

英文摘要:

The Lee-Wick models are higher-derivative theories that are claimed to be unitary thanks to a peculiar cancelation mechanism. In this paper, we provide a new formulation of the models, to clarify several aspects that have remained quite mysterious, so far. Specifically, we define them as nonanalytically Wick rotated Euclidean theories. The complex energy plane is divided into disconnected regions, which can be related to one another by a well-defined, albeit nonanalytic procedure. Working in a generic Lorentz frame, the models are intrinsically equipped with the right recipe to treat the pinchings of the Lee-Wick poles, with no need of external ad hoc prescriptions. We describe these features in detail by calculating the one-loop bubble diagram and explaining how the key properties generalize to more complicated diagrams. The physical results of our formulation are different from those of the previous ones. The unusual behaviors of the physical amplitudes lead to interesting phenomenological predictions.

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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