Running coupling constant of ten-flavor QCD with the Schrodinger functional method
Running coupling constant of ten-flavor QCD with the Schrodinger functional method
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DOI：
10.1103/physrevd.83.074509
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发表时间：
2010-11
影响因子：
5
通讯作者：
Masashi Hayakawa;K. Ishikawa;Y. Osaki;S. Takeda;S. Uno;N. Yamada
中科院分区：
文献类型：
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作者：
Masashi Hayakawa;K. Ishikawa;Y. Osaki;S. Takeda;S. Uno;N. Yamada
步行技术色理论试图将电弱对称性破缺实现为具有慢变规范耦合常数和大质量反常维数的规范动力学引起的自发手征对称性破缺。具有这些特征的多味QCD理论就是候选者。我们着重研究了在基本表象中包含十种无质量费米子的SU（3）规范理论，并在薛定谔泛函方案下计算了规范耦合常数。数值模拟采用O（a）-未改进的格点作用量，连续极限取格点间距的线性。我们观察到的证据表明，这个理论具有红外不动点。
The walking technicolor theory attempts to realize electroweak symmetry breaking as the spontaneous chiral symmetry breakdown caused by the gauge dynamics with slowly varying gauge coupling constant and large mass anomalous dimension. Many-flavor QCD theories are candidates owning these features. We focus on the SU(3) gauge theory with ten flavors of massless fermions in the fundamental representation, and compute the gauge coupling constant in the Schroedinger functional scheme. Numerical simulation is performed with O(a)-unimproved lattice action, and the continuum limit is taken in linear in lattice spacing. We observe evidence that this theory possesses an infrared fixed point.