报告题目:A computation on Two-Loop Six-Point integrals
报 告 人:张扬 (中国科学技术大学)
报告时间:2024年3月22日(周五)上午8:50
报告地点:新葡萄88805官网新楼D502
报告摘要:
For the first time, we compute three families of two–loop six–point massless Feynman integrals in dimensional regularization, namely the double–box, the pentagon–triangle and the hegaxon–bubble family. The results are presented in terms of iterated integrals, providing the first two–loop master integral computation with eight scales via canonical differential equations. We describe the corresponding integral basis with uniform transcendentality, the relevant function alphabet and analytic boundary values at a particular point in the Euclidean region up to fourth order in the regularization parameter ε. The integrals are expressed as classical polylogarithms and one–fold integrations for fast and high–precision evaluation.
报告人简介:
张扬教授任教于中国科学技术大学近代物理系交叉理论中心、彭桓武高能基础理论研究中心。他于2011年博士毕业于美国康奈尔大学。2011年-2019年期间,他在丹麦尼尔斯玻尔研究所, 瑞士苏黎世联邦理工学院,德国美因茨大学和慕尼黑马克斯普朗克物理研究所工作,2019年加入中科大。张扬教授研究方向是理论物理的前沿问题,如散射振幅和微扰量子色动力学,量子可积模型等。
邀请人:杜一剑 副教授