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(Seminar) Rational terms at two loops |
2020-01-03
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CAS Key Laboratory of Theoretical Physics
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Institute of Theoretical Physics
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Chinese Academy of Sciences
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Seminar
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Title
题目
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Rational terms at two loops |
Speaker
报告人
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Affiliation
所在单位
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University of Zurich |
Date
日期
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2:00pm, Jan 03, 2020, Friday |
Venue
地点
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ITP South Building 6620
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Abstract
摘要
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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.
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Contact Person
所内联系人
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Gang Yang |
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