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arXiv 0910.4335hep-lathep-phhep-th
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QCD真空的过滤拓扑结构:动力学夸克的效应

Filtered topological structure of the QCD vacuum: Effects of dynamical quarks

Falk Bruckmann, Florian Gruber, Andreas Schäfer

摘要:

我们系统地比较了用于提取SU(3)格点构型拓扑结构的滤波方法。我们发现,有一个很强的相关性的拓扑电荷密度得到APE和斯托特涂抹。为了摆脱这些方法的文物,我们分析的结构,也看到了拉普拉斯滤波,并确实确定文物强拖影。在动力学夸克的存在下,这种组合分析中的拓扑电荷密度更加分散。一个幂律指数,过滤的拓扑集群的分布特征原来是不远的值的瞬子气体模型。

英文摘要:

We systematically compare filtering methods used to extract topological structures on SU(3) lattice configurations. We show that there is a strong correlation of the topological charge densities obtained by APE and Stout smearing. To get rid of artifacts of these methods, we analyse structures that are also seen by Laplace filtering and indeed identify artifacts for strong smearing. The topological charge density in this combined analysis is more fragmented in the presence of dynamical quarks. A power law exponent that characterises the distribution of filtered topological clusters turns out to be not far off the values of an instanton gas model.

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