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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1402.2613hep-thhep-ph
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Feynman图的Hopf代数中Feynman图的生成与计算

Feynman graph generation and calculations in the Hopf algebra of Feynman graphs

Michael Borinsky

摘要:

提供了两个计算量子场论振幅微扰展开的程序。Feyngen可以用来生成Yang-Mills、QED和$φ^k$理论的Feynman图。使用专门的图论工具,feyngen可以生成相对较高的循环阶数的图。feyncop实现了这些费曼图的Hopf代数,其中包含了在基本量子场论的微扰理论中计算有限结果所必需的重整化过程。通过与零维量子场论的显式计算的比较来验证feyngen,并且使用图的Hopf代数上的组合恒等式来验证feyncop。

英文摘要:

Two programs for the computation of perturbative expansions of quantum field theory amplitudes are provided. feyngen can be used to generate Feynman graphs for Yang-Mills, QED and $φ^k$ theories. Using dedicated graph theoretic tools feyngen can generate graphs of comparatively high loop orders. feyncop implements the Hopf algebra of those Feynman graphs which incorporates the renormalization procedure necessary to calculate finite results in perturbation theory of the underlying quantum field theory. feyngen is validated by comparison to explicit calculations of zero dimensional quantum field theories and feyncop is validated using a combinatorial identity on the Hopf algebra of graphs.

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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