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arXiv 1909.09776hep-ph
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SU(3)对偶QCD形式中的对偶迈斯纳效应和夸克禁闭势

Dual Meissner Effect and Quark Confinement Potential in S U(3) Dual QCD Formalism

Garima Punetha, H. C. Chandola

摘要:

在SU(3)色规范理论的框架下,采用磁对称性提取阿贝尔场和磁单极子,研究了色禁闭的机制。色限机制的存在对应于由单极子引起的双迈斯纳效应。定义了穿透深度和相干长度这两个长度尺度来说明QCD真空的标度性质,它们的比值定义了指示I型和II型对偶超导体边界的Ginzburg-Landau参数。这两个尺度的存在描述了禁闭磁通管的本征形状,也是QCD禁闭双超导模型的一个特征。在SU(3)对偶QCD公式的红外区,计算了夸克禁闭势并构造了弦张力的表达式。此外,随着动力学夸克的引入,通量管破裂并导致夸克反夸克对的产生。有限温度夸克禁闭势和相关的弦张力也被提取出来,这表明在临界温度附近有相当大的减少,与最近的晶格研究一致。

英文摘要:

The mechanism of color confinement has been studied in the framework of SU (3) color gauge theory in terms of abelian fields and monopoles extracted by adopting magnetic symmetry. The existence of the mechanism of color confinement corresponds to the dual Meissner effect caused by monopoles. The two length scales, i.e. the penetration depth and coherence length are defined to demonstrate the scaling nature of the QCD vacuum and their ratio defines the Ginzburg-Landau parameter indicating the border of type I and type II dual superconductor. The existence of these two length scales describes the intrinsic shape of the confining flux-tube and is a characteristic of the dual superconductor model of confinement in QCD. As a result, the quark confining potential has been computed and the resulting expression of string tension has been constructed in the infrared sector of SU (3) Dual QCD formulation. Moreover, with the introduction of dynamical quarks the flux tube breaks and leads to the creation of quark anti-quark pairs. Finite temperature quark confining potential and the associated string tension has also been extracted which demonstrates a considerable reduction in the vicinity of critical temperature showing agreement with the recent lattice studies.

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。

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