arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0710.3221hep-lat
收藏

SU中禁闭的规范无关研究(3)Yang-Mills理论

Toward gauge independent study of confinement in SU(3) Yang-Mills theory

A. Shibata, S. Kato, K. -I. Kondo, T. Murakami, T. Shinohara, S. Ito

摘要:

双超导被认为是一种有前途的夸克禁闭机制,并已在晶格上有效地研究了一个特殊的规范称为最大阿贝尔(MA)规范。我们提出了一种新的SU(3)Yang-Mills理论的表述,它是基于非线性变量的变化,其中新的场变量被期望在连续极限下约化为Cho-Faddeev-Niemi- Shabanov分解的场变量.通过引入一个新的变量,比如色场,携带颜色方向,这个公式使我们能够恢复和保持颜色对称性,这是在传统的MA规范由于天真的分离的规范势成对角和非对角分量丢失。这个公式的一个优点是,我们可以定义规范不变的磁单极子,而不依赖于特定的规范,从双超导的观点来研究夸克禁闭。在这次演讲中,我们将提出相关的晶格公式来实现上述优点,并通过数值模拟的初步结果来证明这种公式的有效性。这个SU(3)公式是我们在前一次会议上提出的SU(2)公式的推广。

英文摘要:

Dual superconductivity is believed to be a promising mechanism for quark confinement and has been investigated on a lattice effectively by a particular gauge called the maximal Abelian (MA) gauge. We propose a new formulation of SU(3) Yang-Mills theory on a lattice based on a non-linear change of variables where the new field variables are expected to reduce to those of the Cho-Faddeev-Niemi- Shabanov decomposition in the continuum limit. By introducing a new variable, say color field, carrying the color direction with it, this formulation enables us to restore and maintain color symmetry that was lost in the conventional MA gauge due to the naive separation of the gauge potential into diagonal and off-diagonal components. An advantage of this formulation is that we can define gaugeinvariant magnetic monopoles without relying on specific gauges to investigate quark confinement from the viewpoint of dual superconductivity. In this talk, we will present the relevant lattice formulation to realize the above advantages and preliminary results of numerical simulations to demonstrate the validity of this formulation. This SU(3) formulation is an extension of the SU(2) version already proposed by us in the previous conference.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑