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arXiv 0910.0599hep-ph
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短程势与厚心涡模型

Short distance potential and the thick center vortex model

Sedigheh Deldar, Shahnoosh Rafibakhsh

摘要:

通过增加穿透威尔逊圈的涡通量在平凡中心元附近的贡献,以及在厚中心涡模型中改变涡核尺寸,计算了重SU(3)和SU(4)源之间的短程势。用这种方法得到了符合Casimir标度的库仑势。此外,所有其他功能的潜力,包括一个线性的中间潜力与Casimir标度和一个大的距离潜力的$N$ -ality的代表性成正比恢复。因此,厚中心涡模型可以作为一个唯象模型,它能够描述所有区域的潜力。

英文摘要:

The short distance potentials between heavy SU(3) and SU(4) sources are calculated by increasing the role of vortex fluxes piercing Wilson loops with contributions close to the trivial center element and by fluctuating the vortex core size in the model of thick center vortices. By this method, a Coulombic potential consistent with Casimir scaling is obtained. In addition, all other features of the potential including a linear intermediate potential in agreement with Casimir scaling and a large distance potential proportional to the $N$-ality of the representation are restored. Therefore, the model of thick center vortices may be used as a phenomenological model, which is able to describe the potential for all regimes.

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