arXiv 1010.09012010-10-05hep-phhep-lat

SU（2）与六个基本费米子耦合的质量反常维数和运行

Mass anomalous dimension and running of the coupling in SU(2) with six fundamental fermions

Francis Bursa, Luigi Del Debbio, Liam Keegan, Claudio Pica, Thomas Pickup

备注：: 7 pages, 6 figures. Talk given at the XXVIII International Symposium on Lattice Field Theory (Lattice 2010), Villasimius, Italy, June 14-19, 2010
发表信息：: PoS Lattice2010:070,2010

摘要：

我们用六个无质量的基本狄拉克费米子模拟了SU（2）规范理论。通过使用薛定谔泛函方法，我们测量的耦合和费米子质量在很宽的长度尺度范围内运行。我们观察到非常缓慢的运行的耦合和构造的费米子质量异常尺寸的估计，使$0.135 <γ< 1.03$在该地区兼容的IR固定点。

英文摘要：

We simulate SU(2) gauge theory with six massless fundamental Dirac fermions. By using the Schrödinger Functional method we measure the running of the coupling and the fermion mass over a wide range of length scales. We observe very slow running of the coupling and construct an estimator for the fermion mass anomalous dimension giving $0.135 <γ< 1.03$ in the region compatible with an IR fixed point.

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