Twisted space-time reduced model of large N QCD with two adjoint Wilson fermions
Twisted space-time reduced model of large N QCD with two adjoint Wilson fermions
复制标题
具有两个伴随威尔逊费米子的大 N QCD 扭曲时空简化模型
DOI：
10.1103/physrevd.88.014514
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Okawa
中科院分区：
文献类型：
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作者：
A. Gonzalez-Arroyo;M. Okawa
利用具有不消失通量的对称扭转边界条件，构造了带两个Wilson费米子的大qcd的时空约简模型。对于大而有限的模型，该模型应表现为时空体积上普通晶格规范模型的放大版。我们对该模型和模型（对应于周期边界条件）中几个量的依赖性进行了比较。虽然对称似乎在所有情况下都是不被破坏的，但依赖分析倾向于使用相同的值，因为在纯规范情况下对称也是不被破坏的。特别是，最近由几位作者研究的模型显示出对参数区域内的巨大且不规则的依赖。这使得这种简化模型对于提取大晶格理论的物理信息非常不实用。相反，足够大的模型给出了一致的结果，甚至对于扩展的可观测对象，如威尔逊循环到，匹配晶格模型与时空体积的预期行为。
The space-time reduced model of largeQCD with two adjoint Wilson fermions is constructed by applying the symmetric twist boundary conditions with nonvanishing flux. For large but finite, the model should behave as the largeversion of the ordinary lattice gauge model on aspace-time volume. We perform a comparison of thedependence of several quantities in this model and in themodel (corresponding to periodic boundary conditions). Although thesymmetry seems unbroken in all cases, the-dependence analysis favors the use of the same values ofandfor which the symmetry is also unbroken in the pure gauge case. In particular, themodel, studied recently by several authors, shows a large and irregular dependence onwithin our region of parameters. This makes this reduced model very impractical for extracting physical information about the largelattice theory. On the contrary, the model forand large enoughgives consistent results, even for extended observables as Wilson loopsup to,, matching the expected behavior for the lattice model with aspace-time volume.