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Package-X:用于单圈积分解析计算的Mathematica软件包

Package-X: A Mathematica package for the analytic calculation of one-loop integrals

Hiren H. Patel

摘要:

本文介绍了一个用于解析计算四维时空附近的一维单圈积分的Mathematica软件包-X。Package-X计算任意高秩张量积分,最多三个传播子,并给出紧凑的表达UV发散,IR发散,和有限的部分,任何运动配置涉及实值外部不变量和内部质量。输出表达式可以很容易地进行数值计算,并使用内置的Mathematica函数进行符号操作。重点是评价速度、结果的可读性,特别是方便用户。还包括一个例行程序来计算狄拉克矩阵的产品的痕迹,并收集投影仪,以方便计算费米子形状因子在一个循环。该软件包旨在用作研究工具和教育工具。

英文摘要:

Package-X, a Mathematica package for the analytic computation of one-loop integrals dimensionally regulated near 4 spacetime dimensions is described. Package-X computes arbitrarily high rank tensor integrals with up to three propagators, and gives compact expressions of UV divergent, IR divergent, and finite parts for any kinematic configuration involving real-valued external invariants and internal masses. Output expressions can be readily evaluated numerically and manipulated symbolically with built-in Mathematica functions. Emphasis is on evaluation speed, on readability of results, and especially on user-friendliness. Also included is a routine to compute traces of products of Dirac matrices, and a collection of projectors to facilitate the computation of fermion form factors at one-loop. The package is intended to be used both as a research tool and as an educational tool.

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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