Quark duclear physics in the dual Ginzburg-Landau theory

对偶金兹堡-朗道理论中的夸克双核物理

• 批准号: 11640278
• 负责人: TOKI Hiroshi
• 金额: $ 1.79万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640278/
• 关键词: Dual Ginzburg-Landau theory; Color monopole; Quark confinement; Monopole condensation; Instantons; Deformed oscillator quark model; Baryon excited spectra; Three body confining force; 変形調和振動子

The Dual Ginzburg-Landau(DGL)tbeory is cosidered to be the effective theory of low energy QCD.We have performed research in wide range in which the foundation of the DGL theory, its application to the low energy pbenomena and the phenomenology of hadronic phenomena are studies.1. In the DGL theory the color monopole field plays the central role. We considered the insanton as the source of the monopole and showed that when the number of instantons increases, the system becomes the monopole condensed medium. However, the strength of confinement is not enough to reproduce its full strength. On top, we have studied the properties of quarks in the background of instantons and tried to calculate the chiral symmetry breaking and the confinement properties.2. We have made lattice QCD simulations on the three body confining potentials in the baryonic system. We could show that the confining force is proportional to the minimum length of connection of the three quarks. The strength is found to b … More e the same as the one of the meson system. This finding corresponds to the property of the confining potential in the DGL theory. The lattice QCD showed before that non-diagnoal gluons acquere masses in the abelian gauge and these two facts are the strong support of the DGL theory as the effective theory of low energy QCD.3. We have studied the excitation spectra of baryons in the deformed oscillator quark model(DOQ). We have shown that the DOQ model is able to reproduce most of the sxcitation energies of baryons except for a few states. This finding indicates that the excited states of baryons are to be explained in terms of the confinement mechanism. We have studied also the electro-magnetic transitions among baryonic excited states. The results were found to be quite similar to the ones of the non-relativistic quark models. We have then started to investigate the effects of the relativistic kinematics. It is also very inceresting to study baryonic systems using the results of the lattice QCD on the three body confineing force. Less

对偶Ginzburg-Landau(DGL)理论被认为是低能QCD的有效理论。我们进行了广泛的研究，其中包括DGL理论的建立、它在低能现象中的应用以及强子现象的现象学。在DGL理论中，色单极场起着核心作用。我们考虑了单极子的来源，结果表明，随着瞬时子数的增加，系统变成单极子凝聚介质。然而，禁闭的力量不足以重现其全部力量。首先，我们研究了瞬子背景下夸克的性质，并尝试计算了手征对称性破缺和禁闭性质。我们对重子系统中的三体禁闭势进行了晶格QCD模拟。我们可以证明禁闭力与三个夸克的最小连接长度成正比。…的力量被发现是最好的更多的是与介子系统的相同。这一发现与DGL理论中的禁闭势性质相对应。晶格QCD表明，阿贝尔规范中的非诊断胶子获得了质量，这两个事实有力地支持了DGL理论作为低能QCD的有效理论。研究了形变振子夸克模型(DOQ)中重子的激发谱。结果表明，DOQ模型能够再现除极少数态外的大部分重子激发能。这一发现表明，重子的激发态可以用禁闭机制来解释。我们还研究了重子激发态之间的电磁跃迁。结果发现与非相对论夸克模型的结果非常相似。然后我们开始研究相对论运动学的影响。利用晶格QCD对三体禁闭力的结果来研究重子系统也是非常有意义的。较少

项目成果

M.Takayama et al.: "Systematics of baryon masses and deformed oscillator quark model"Nucl.Phys.A. 663. 695-698 (2000)

M.Takayama 等人：“重子质量和变形振子夸克模型的系统学”Nucl.Phys.A。

V.Gogokhia, H.Toki, T.Sakai, G.Kluge: "Chiral QCD vacuum energy density in the zero modes enhancement quantum model."International Journal of Modern Physics. A15. 45-64 (2000)

V.Gogokhia、H.Toki、T.Sakai、G.Kluge：“零模式增强量子模型中的手性 QCD 真空能量密度”。《国际现代物理学杂志》。

M.Fukushima et al.: "Quark confinement and extended monopole clustering in the multi-instanton system."Nucl.Phys.Proc.Supp.. 83. 458-460 (2000)

M.Fukushima 等人：“多瞬时系统中的夸克限制和扩展单极子簇。”Nucl.Phys.Proc.Supp.. 83. 458-460 (2000)

M.Fukushima,H.Suganuma,H.Toki: "Quark confinement and extended monopole clustering in the multi-instanton system. "Nuclear Physics Proceedings Supplements. 83. 458-460 (2000)

M.Fukushima、H.Suganuma、H.Toki：“多瞬时系统中的夸克限制和扩展单极子聚类。”核物理论文集增刊。

D.Roy, T.Morii, H.Toki, A.I.Titov: "Is there window for a supersoft pomeron in J/psi photoproduction at low energy?"Progress of Theoretical Physics. 103. 747-753 (2000)

D.Roy、T.Morii、H.Toki、A.I.Titov：“在低能量 J/psi 光生产中是否存在超软波默龙的窗口？”理论物理进展。