Lecture 1 Exotic Hadrons with Heavy Quarks
主讲人：
Dr.Alexey Nefediev
论坛时间：
2024年4月9日09:00-11:00，4月11日11:20-12:20
地点：
理论物理研究所北楼322
主办单位：
北航物理学院
中国科学院理论物理研究所
北航国交院-彭桓武科教合作中心
报告专家简介：
Dr.Nefediev works mainly on theoretical studies in hadronic physics, analysis and interpretation of the experimental and lattice data, prediction of new hadronic states and their properties, and so on. He obtained his PhD degree in 1999 at the Institute of Theoretical and Experimental Physics (Moscow, Russia). From 2000 to 2002, he was a postdoctoral researcher at the Instituto Superior Tecnico (Lisbon, Portugal). From 2002, he took a permanent position as a Senior Scientist at the Institute for Theoretical and Experimental Physics (Moscow). In 2017, he obtained his second scientific degree adopted in Russia, Doctor of Sciences (habilitation). In 2018, he occupied a permanent position as a Leading Scientist at P.N.Lebedev Institute of the Russian Academy of Sciences (Moscow). Since 2022, he has been holding the position of a Scientific Advisor at the Institute Josef Stefan, Ljubljana, Slovania.
报告简介：
For several decades, the quark model suggested 60 years ago was a powerful and successful tool to understand and predict properties of hadronic states in QCD. However,since 2003, when the Belle Collaboration discovered properties at odds with the predictions of the quark model, a new era in the spectroscopy of hadrons containing heavy quarks began. Since then,many new states in the spectrum of charmonium and bottomonium have been discovered that do not fit into the quark model scheme and qualify as exotic states. Most of them reside near strong thresholds that leave imprint on their nature and properties. After a very general introduction to the physics of ordinary and exotic hadrons I will discuss various phenomena(coupled channels, multi-body dynamics, interplay of the quark and hadronic degrees of freedom,and so on)that need to be taken into account in theoretical approaches to reliably extract the information contained in the data on exotic hadrons with heavy quarks. Then I will discuss particular examples of the effective field theory approach applied to varios recently discovered exotic hadrons with heavy quarks.
Lecture 2 Effective Field Theories of QCD in a Finite Volume
主讲人：
Dr.Akaki Rusetsky
论坛时间：
2024年4月9日09:00-11:00，4月11日11:20-12:20
地点：
理论物理研究所北楼322
主办单位：
北航物理学院
中国科学院理论物理研究所
北航国交院-彭桓武科教合作中心
报告专家简介：
Dr.Akaki Rusetsky got his PhD degree from Tbilisi State University(Georgia)in 1994.Since then,he worked at High Energy Physics Institute(Tbilisi, Georgia), Joint Institute for Nuclear Research(Dubna, Russia), University of Bern(Switzerland)and ECT*(Trento, Italy). Since 2003, he has a position at the University of Bonn (Germany). His research interests include QCD and hadron physics, effective field theories and lattice.
报告简介：
In these lectures, I give an overview of the effective field theories in a finite volume, which are used to relate the quantities, calculated in lattice QCD(the particle masses, many-particle energy levels, the matrix elements of operators calculated between different eigenstates of the Hamiltonian,etc.)to the experimentally measured observables (masses, scattering amplitudes, decay widths, etc.). In the first part of the lectures, I consider in detail the lattice formulation of ordinary quantum mechanics and give a derivation of some important relations between finite-and infinite-volume quantities in a toy model. The second part of the lectures is dedicated to an introduction into different low-energy effective theories of QCD(Chiral Perturbation Theory, non-relativistic effective field theory)and their use for extracting the infinite-volume observables from lattice QCD calculations that are always carried out in a finite volume.
