arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1709.07526hep-ph
收藏

传播子任意次幂的无质量在壳盒积分

Massless on-shell box integral with arbitrary powers of propagators

O. V. Tarasov

摘要:

在任意时空维$d$中,具有任意指数的无质量单圈盒积分可归结为三个广义超几何函数之和.这一结果是由三阶超几何型微分方程的解导出的。为了导出微分方程,使用了传播子的非整数幂的积分的Gröbner基技术。一套完整的递推关系从Gröbner基础。给出了结果的$\varepsilon =(4-d)/2$展开式的前几项。

英文摘要:

The massless one-loop box integral with arbitrary indices in arbitrary space-time dimension $d$ is shown to reduce to a sum over three generalised hypergeometric functions. This result follows from the solution to the third order differential equation of hypergeometric type. To derive the differential equation, the Gröbner basis technique for integrals with noninteger powers of propagators was used. A complete set of recurrence relations from the Gröbner basis is presented. The first several terms in the $\varepsilon =(4-d)/2$ expansion of the result are given.

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。

↑