报告人｜ Dr. João Barata (CERN & BNL)

时    间｜2026年4月9日 13：30

地    点｜物理楼402

Abstract: In recent years, energy-flow operators have emerged as a common language linking theory and experiment for mapping the dynamics of quantum field theories. In this talk, I will survey how multi-point energy correlators are used to characterize QCD matter in high-energy scattering, with emphasis on heavy ion collisions. I will review the theoretical status of light-ray correlation functions-including factorization, evolution, and medium-induced modifications-and summarize the corresponding experimental measurements. I will then argue that these observables provide controlled access to (non-vacuum) non-trivial quantum states, offering a bridge between collider phenomenology and formal developments in quantum field theory where such states remain poorly understood.

Speaker: João Barata completed his graduate studies at the University of Santiago de Compostela between 2019 and 2021. He then joined Brookhaven National Laboratory as a postdoctoral researcher, before becoming a Senior Research Fellow in the CERN Theory Group in 2024. This fall, he will return to Brookhaven to start a junior position in the Nuclear Theory Division as an inaugural Raymond Davis Fellow. His research focuses on the dynamics of high-energy QCD processes in heavy-ion collisions, with particular emphasis on jet physics. In parallel, he is increasingly interested in exploring applications of quantum information science to the study of out-of-equilibrium dynamics in gauge theories.