Improved lattice spectroscopy of minimal walking technicolor
Improved lattice spectroscopy of minimal walking technicolor
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DOI：
10.1103/physrevd.84.034506
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发表时间：
2011-08-26
影响因子：
5
通讯作者：
Rago, Antonio
中科院分区：
文献类型：
--
作者：
Bursa, Francis;Del Debbio, Luigi;Rago, Antonio
本文用改进的源和汇算符对具有两个伴随费米子的SU（2）规范理论中的光谱观测量进行了数值研究。我们详细比较了我们的改进结果与以前的确定使用点源和汇的群众，我们调查在这两种情况下可能的系统性影响。这样的比较使我们能够清楚地评估一个短的时间范围对物理图像的影响，并调查由于有限的空间盒的一些影响。在确认理论的IR共形行为的同时，我们的研究表明，为了做出可靠的定量预测，需要更好地处理有限尺寸效应。
We present a numerical study of spectroscopic observables in the SU(2) gauge theory with two adjoint fermions using improved source and sink operators. We compare in detail our improved results with previous determinations of masses that used point sources and sinks and we investigate possible systematic effects in both cases. Such comparison enables us to clearly assess the impact of a short temporal extent on the physical picture, and to investigate some effects due to the finite spatial box. While confirming the IR-conformal behavior of the theory, our investigation shows that in order to make firm quantitative predictions, a better handle on finite size effects is needed.