Research of Multi-Quark Systems based on Quantum Chromodynamics

基于强相互作用的基本理论——量子色动力学（QCD），我们从夸克和胶子的角度研究了非微扰真空和核子、介子等强子。特别地，我们利用晶格QCD，即强相互作用的第一性原理计算，研究了“色约束”作为理论物理中的一个重要课题，以及近年来在实验中受到关注的“外来强子”等多夸克系统。我们还使用了基于超弦理论的一种新的解析方法——“全息QCD”。

Based on quantum chromodynamics (QCD), which is the fundamental theory of the strong interaction, we study the nonperturbative vacuum and hadrons such as nucleons and mesons in terms of quarks and gluons. In particular, we use lattice QCD, i.e., the first-principle calculation of the strong interaction, and study "color confinement" as an important subject in theoretical physics, and multi-quark systems like "exotic hadrons", which are experimentally paid attention in recent years. We also use "holographic QCD", a new analytical method based on the superstring theory.