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(Seminar) Rational terms at two loops
2020-01-03  【 】【打印】【關閉

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

 Seminar

Title

題目

Rational terms at two loops

Speaker

報告人

Hantian Zhang

Affiliation

所在單位

University of Zurich

Date

日期

2:00pm, Jan 03, 2020, Friday

Venue

地點

ITP South Building 6620

Abstract

摘要

In this talk, I will discuss the generalisation of renormalisation procedure such that the renormalised two-loop amplitudes in D dimensions can be reconstructed by amplitudes with four dimensional numerators in loop integrands, which enables the numerical two-loop amplitudes constructions. Under this generalisation, the two-loop rational terms naturally emerge together with UV counterterms. I will further prove that the two-loop rational terms are local counterterms, and provide a generic method to compute them from massive one-scale tadpole integrals. The analytical results of QED two-loop rational terms will be presented at the end.

Contact Person

所內聯系人

Gang Yang
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