Positivity bounds and the inverse problem in SMEFT

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， 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