Filtered topological structure of the QCD vacuum: Effects of dynamical quarks
Filtered topological structure of the QCD vacuum: Effects of dynamical quarks
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QCD 真空的过滤拓扑结构：动力夸克的影响
DOI：
10.1016/j.physletb.2010.02.077
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发表时间：
2009
影响因子：
4.4
通讯作者：
A. Schafer
中科院分区：
文献类型：
--
作者：
F. Bruckmann;F. Gruber;A. Schafer
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。为了消除这些方法的伪影，我们分析了通过拉普拉斯滤波也可以看到的结构，并且确实识别了强拖尾的伪影。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。
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.
DOI：
10.1140/epja/i2010-10915-1
发表时间：
2010
期刊：
The European Physical Journal A
影响因子：
--
作者：
Bruckmann;Gruber;Jansen;Marinkovic;Urbach;Wagner
通讯作者：
Wagner