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arXiv 1701.02442hep-lat
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SU(3)Yang-Mills理论中阿贝尔或非阿贝尔对偶超导引起的夸克禁闭

Quark confinement to be caused by Abelian or non-Abelian dual superconductivity in the SU(3) Yang-Mills theory

Akihiro Shibata, Kei-Ichi Kondo, Seikou Kato, Toru Shinohara

摘要:

双超导电性是一种很有希望的夸克禁闭机制。本文提出了一种新的格点杨-米尔斯理论,它使我们能够把原来的非阿贝尔规范场变换成新的场变量,使得其中一个称为限制场的场变量以规范无关的方式对夸克禁闭起主导作用。本文指出,除了Cho,Faddeev和Niemi采用的方法(最大选择)外,SU(3)Yang-Mills理论还有另一种使用新的场变量的方法(最小选择)。在过去的格点会议上,我们已经给出了支持非阿贝尔对偶超导的数值证据。这一结果应与在最大选择中得到的阿贝尔对偶超导性进行比较,最大选择是常规阿贝尔投影方法在最大阿贝尔规范中的规范不变推广。在这次演讲中,我们专注于区分两种重新表述,即,从夸克禁闭的双超导性观点讨论了$SU(3)$ Yang-Mills理论的最大和最小选择。我们研究了两种方案中有限温度下的禁闭/解除禁闭相变,并与原Yang-Mills理论进行了比较。为此,我们测量了玻里雅科夫环的分布和玻里雅科夫环平均值,玻里雅科夫环的关联函数以及连接夸克和反夸克的色电通量在禁闭相和解除禁闭相的分布。

英文摘要:

The dual superconductivity is a promising mechanism for quark confinement. We have presented a new formulation of the Yang-Mills theory on the lattice that enables us to change the original non-Abelian gauge field into the new field variables such that one of them called the restricted field gives the dominant contribution to quark confinement in the gauge independent way. We have pointed out that the SU(3) Yang-Mills theory has another reformulation using new field variables (minimal option), in addition to the way adopted by Cho, Faddeev and Niemi (maximal option). In the past lattice conferences, we have shown the numerical evidences that support the non-Abelian dual superconductivity using the minimal option for the SU(3) Yang-Mills theory. This result should be compared with Abelian dual superconductivity obtained in the maximal option which is a gauge invariant extension of the conventional Abelian projection method in the maximal Abelian gauge. In this talk, we focus on discriminating between two reformulations, i.e., maximal and minimal options of the $SU(3)$ Yang-Mills theory from the viewpoint of dual superconductivity for quark confinement. We investigate the confinement/deconfinement phase transitions at finite temperature in both options, which are compared with the original Yang-Mills theory. For this purpose, we measure the distribution of Polyakov-loops and the Polyakov-loop average, the correlation function of the Polyakov loops and the distribution of the chromoelectric flux connecting a quark and antiquark in both confinement and deconfinement phases.

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