Study of QCD confinement mechanism using large-scale parallel computers

利用大规模并行计算机研究QCD约束机制

• 批准号: 10440073
• 负责人: SUZUKI Tsuneo
• 金额: $ 8.51万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10440073/
• 关键词: Quark confinement; Monopole; Monte-Carlo Simulation; Lattice QCD; Dual transformation; Infrared effective theory of QCD; Finite-temperature phase transition; topology; モノポール; クォークの閉じ込め; quarle confinement; laltico

The following results have been obtained mainly from Monte-Carlo simulation studies using SR8000 (VPP500) at KEK and VPP700 at RIKEN :(1)pure SU (2) QCD : Almost perfect monopole action in the continuum limit is obtained. Along with a perfect operator constructed, it leads us to the rotational invariance in the continuum limit. The action can be transformed exactly into a string theory and the dual Ginzburg-Landau theory on the lattice. (2) pure SU (3) QCD : Almost perfect monopole action for constained three monopole courrents is fixed. The static potential, the string tension and the glueball mass are evaluated. (3) Gauge (in) dependence of abelian dominance : Gauge independence of the monopole physics are studied using various block-spin transformations with various gauges. (4) 3d Georgi-Glashow model : lattice instanton action is fixed numerically for some range of parameters. It is shown to be compatible with the dilute-gas approximation of Polyakov's calculation. (5) Simulations of DGL theory : The electric-field flux distribution is measured in DGL theory numerically which looks similar to that of QCD.(6) T≠0 QCD : From the simulations on anisotropic lattice, space-space and time-time monopole actions are obtained. They are shown to be quite different in the high-temperature phase. (7) full QCD : Intertational collaboration with DESY and ITEP groups has begun. Preliminary data shows monopole density is much higer than that in the quenched case.

以下结果主要是从蒙特 - 卡洛模拟研究中使用kek和riken的VPP700的sr8000（VPP500）的研究获得的：（1）纯SU（2）QCD：在继续限制下几乎完美的单极作用。随着完美的操作员的构建，它使我们在持续极限的情况下达到了旋转的不变性。该动作可以准确地转变为弦理论和双重晶格的双重金兹堡 - 兰道理论。 （2）纯SU（3）QCD：固定了包含三个单极电流的几乎完美的单极作用。评估了静态电势，弦张力和粘合球质量。 （3）Abelian优势的量规（IN）依赖性：单极物理学的量规独立性是使用各种具有各种测量值的各种宽旋转转换进行了研究的。 （4）3D Georgi-glashow模型：晶格Instanton动作基本上是针对某些参数范围的。它显示与Polyakov计算的稀 - 气近似兼容。 （5）DGL理论的仿真：在数值上以DGL理论测量电场通量分布，该理论看起来与QCD相似。（6）T≠0 QCD：从各向异性晶格，空间空间和时间时间单台词上的模拟中获得。在高温阶段，它们被证明是完全不同的。 （7）完整的QCD：与DESY和ITEP团体的国际合作已经开始。初步数据显示，单极密度远高于淬火情况。

项目成果

M.N.Chernodub et al.: "Almost Perfect quantum latlice, action for low-energy SU (2) gluodynamics"Phyo.Rev.. D62. 094506-1-16 (2000)

M.N.Chernodub 等人：“几乎完美的量子点阵，低能 SU (2) 胶动力学的作用”Phyo.Rev.. D62。

T.Okude et al.: "Monopoles and hadron spectrum in quenched QCD" Nucl.Phys. B533. 576-590 (1998)

T.Okude 等人：“淬灭 QCD 中的单极子和强子谱”Nucl.Phys。

S.Fujimoto et al.: "A quantum perfect letlice action for monopoles ad strinro"Phyo.Lett.. B476. 437-447 (2000)

S.Fujimoto 等人：“单极子 ad strinro 的量子完美 letlice 作用”Phyo.Lett.. B476。

F.Shoji: "A new gauge-fixing method for abelian projection."Phys.Lett.. B476. 199-204 (2000)

F.Shoji：“一种新的阿贝尔投影规范固定方法。”Phys.Lett.. B476。

S.Fujimoto: "A quantum perfect lattice action for mopoles and strings"Phyo.Lett.. B476. 437-447 (2000)

S.Fujimoto：“磁极和弦的量子完美晶格作用”Phyo.Lett.. B476。