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arXiv 1209.5579hep-lathep-phhep-th
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极小行走人工色的拓扑

Topology of Minimal Walking Technicolor

Ed Bennett, Biagio Lucini

摘要:

我们进行了一个格子研究的拓扑磁化率和瞬子大小分布的$\su{2}$规范理论与两个伴随狄拉克费米子(也被称为最小步行Technicolor),这是已知的共形窗口。通过与纯规范理论的比较,我们发现在小质量项变形的理论中,拓扑观测量与费米子动力学是解耦的。这为理论的红外保形性提供了进一步的证据。瞬子尺寸分布的研究表明,这个量可以用来检测有限尺寸效应的发生。

英文摘要:

We perform a lattice study of the topological susceptibility and instanton size distribution of the $\su{2}$ gauge theory with two adjoint Dirac fermions (also known as Minimal Walking Technicolor), which is known to be in the conformal window. In the theory deformed with a small mass term, by drawing a comparison with the pure gauge theory, we find that topological observables are decoupled from the fermion dynamics. This provides further evidence for the infrared conformality of the theory. A study of the instanton size distribution shows that this quantity can be used to detect the onset of finite size effects.

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