Topology and Color Confinement in Dual Higgs Theory of Quantum Chromodynamics

量子色动力学双希格斯理论中的拓扑和颜色限制

基本信息

批准号：
12640274
负责人：
SUGANUMA Hideo
金额：
$ 2.3万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

Based on quantum Chromodynamics (QCD), the fundamental theory of the strong interaction, we study various nonperturbative phenomena such as color confinement in the low-energy region. We perform the following first studies using lattice QCD, which is the first-principle calculation.1. In the maximally abelian (MA) gauge, the off-diagonal gluon component acquires a large effective mass of about 1GeV, which leads to infrared abelianization of QCD.2. In the MA gauge, dual gluons become massive and the dual Meissner effect occurs.3. Then, in the MA gauge, infrared QCD reduces the dual Higgs theory, and quark confinement is physically interpreted to be realized by the dual Higgs mechanism.4. Using lattice QCD, we perform the detailed and accurate analysis for the three-quark (3Q) potential, which is directly responsible to the baryon properties. The 3Q potential is expressed by the sum of the two-body Coulomb potential and the Y-type linear potential. This strongly indicates the Y-type flux-tube formation in the baryon such, as the nucleon.5. We study the gluonic excitation in the 3Q system, and find that its energy is about 1GeV. This large value of the gluonic-excitation energy physically means the absence of the gluonic mode in the low-lying excitations of baryons, and is expected to leads to the success of the simple quark model.6. The scalar glueball is found to be largely changes its properties near the critical temperature of the deconfinement chase transition at finite temperature.7. We study the quark-gluon mixed condensate both at zero and at finite temperatures, and find a strong correlation between quarks and gluons in the nonperturbative QCD vacuum.8. The flavor-singlet baryon is found to have a large mass of about 1.7GeV, and hence it cannot be identified as Λ(1405).

基于量子染色体动力学（QCD），即强相互作用的基本理论，我们研究了低能量区域的各种非扰动现象，例如颜色限制。我们使用晶格QCD进行以下首次研究，这是第一原则计算。1。在最大ABELIAN（MA）仪表中，非对角线麸质成分获得了大约1GEV的大量有效质量，从而导致QCD.2的红外Abelianization。在MA仪表中，双重胶子变得巨大，并且发生双重MEISSNER效应3。然后，在MA仪表中，红外QCD降低了双Higgs理论，夸克限制物理解释为双重HIGGS机制实现。4。使用晶格QCD，我们对三夸克（3Q）电势进行详细而准确的分析，该分析直接负责baryon属性。 3Q电势由两体库仑电势和y型线性电势表示表达。这强烈表明baryon中的Y型通量管形成，例如核子5。我们研究了3Q系统中的麸质兴奋，发现其能量约为1GEV。从物理上讲，这种巨大的谷物兴奋能量意味着在低lut舌的兴奋中没有谷物模式，并有望导致简单夸克模型的成功。6。发现标量粘合球在有限温度下在定义链过渡的临界温度附近很大程度上改变了其性能。7。我们研究夸克 - 糖混合冷凝物在零和有限温度下，并在非扰动QCD真空中发现夸克和胶子之间存在很强的相关性。8。发现味道bary子的质量大约为1.7GEV，因此无法识别为λ（1405）。