报告题目：Decoding two-hadron states in QCD with spatial wavefunctions
时间：2025年10月15日(周三), 14:00
地点：新葡的京集团35222vip203会议室
报告人:吕岩【日本理化学研究所RIKEN】
邀请人：孟璐
报告摘要：
Operator optimization is essential for accurately determining QCD eigenstates in lattice calculations, especially for multi-hadron systems where the spectrum is far denser than for single-hadron states. In this talk, I will present a novel way to systematically construct optimized interpolating operators strongly coupled to QCD two-particle states, which is achieved by incorporating inter-hadron spatial wavefunctions. To efficiently implement these operators in lattice QCD, we introduce a novel quark smearing technique utilizing noise vectors. As a demonstration, we apply this approach to the ΩcccΩccc system, and successfully resolve distinct eigenstates separated by only～5 MeV near the threshold 2m_Ωccc 9700 MeV. This exceptional resolving power opens new possibilities for studies of a wide range of hadronic systems in QCD.
报告人简介：Yan Lyu is a postdoctoral researcher at RIKEN, Japan. He got his Ph.D. from Peking University in 2023. His research interests include hadron physics, lattice gauge field theory and related topics.