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arXiv 1301.7583hep-th
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无质量Feynman积分的保角方法和大N_f方法

Conformal methods for massless Feynman integrals and large N_f methods

J. A. Gracey

摘要:

本文综述了基于保角积分方法计算量子场论中重整化群函数高阶信息的大N方法。作为一个例子,这些技术被应用于一个典型的图,该图在O(1/N^2)时对O(N)phi^4理论的β函数有贡献。大N方法的未来可能的方向进行了讨论,在最近的技术,如拉波尔塔算法的发展。

英文摘要:

We review the large N method of calculating high order information on the renormalization group functions in a quantum field theory which is based on conformal integration methods. As an example these techniques are applied to a typical graph contributing to the beta-function of O(N) phi^4 theory at O(1/N^2). The possible future directions for the large N methods are discussed in light of the development of more recent techniques such as the Laporta algorithm.

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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