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PKU HEP Seminar and Workshop (北京大学高能物理组)

Positivity bounds and the inverse problem in SMEFT

by Prof. Cen Zhang (IHEP, CAS)



I will discuss two topics in SMEFT at dimension-8: positivity bounds are constraints on Wilson coefficients that one can derive by assuming that the UV completion exists and satisfies some of the most fundamental principles of QFT; The inverse problem asks how and to what extend one can determine the UV completion of an EFT, given the values of Wilson coefficients measured at low energy. I will share some thoughts about their connections from a geometric point of view. Introduction of the speaker: 2017至今 副研究员,中国科学院高能物理研究所 2014–2017 Postdoctoral Research Associate, Brookhaven National Laboratory. 2012-2014 Postdoctoral Research Associate, Universite Catholique de Louvain. 2006-2011 Ph. D. Physics, University of Illinois at Urbana-Champaign Online Tencent/VOOV meeting: https://meeting.tencent.com/s/3aR1V9ejP2My 会议 ID:219 233 068