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arXiv 2106.09466math-phhep-thmath.MP
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泛函重整化群方程的严格推导

A Rigorous Derivation of the Functional Renormalisation Group Equation

Jobst Ziebell

AI总结:

本文在Osterwalder-Schrader框架下严格推导泛函重整化群方程,提出保留反射正性与无限自由度的正则化方案,并分析其对经典极限及平移不变性的影响,给出理论收敛条件。

摘要:

在适用于量子场论Osterwalder-Schrader表述的框架中,以数学上严格的方式推导了泛函重整化群方程。为此,我们设计了一种非常一般的正则化方案,该方案保留了反射正性以及包括光滑性在内的无限自由度。此外,展示了正则化过程如何改变经典极限,导致平移不变性的不可避免的破坏。我们还给出了在去除正则化后所得理论收敛的精确条件。

英文摘要:

The functional renormalisation group equation is derived in a mathematically rigorous fashion in a framework suitable for the Osterwalder-Schrader formulation of quantum field theory. To this end, we devise a very general regularisation scheme which retains reflection positivity as well as the infinite degrees of freedom including smoothness. Furthermore, it is shown how the classical limit is altered by the regularisation process leading to an inevitable breaking of translation invariance. We also give precise conditions for the convergence of the obtained theories upon removal of the regularisation.

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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