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arXiv 1605.08091hep-lat
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格点规范理论应用中Dirac谱密度的新方法

New approach to the Dirac spectral density in lattice gauge theory applications

Zoltan Fodor, Kieran Holland, Julius Kuti, Santanu Mondal, Daniel Nogradi, Chik Him Wong

摘要:

我们报告的测试和结果,从一个新的方法的谱密度和模数分布的狄拉克运营商在格点规范理论。该算法生成的格狄拉克算子的谱密度作为一个连续的函数在所有尺度上的完整的本征值谱。这与早期的方法不同,在早期的方法中,积分谱密度(模式数)是针对积分的一些预先选择的固定范围有效地计算的。新的算法允许全球性的研究,如从狄拉克光谱手性凝聚在任何规模,包括截止依赖的红外和紫外光谱范围。物理应用包括尺度相关的质量反常维数,复合费米子算符的谱表示,以及从随机矩阵理论的$ε$ -区域到手征微扰理论的p-区域的交叉过渡。我们提出了彻底的测试的算法在2味六重态SU(3)规范理论,我们继续追求其潜力作为一个最小的实现复合希格斯场景。

英文摘要:

We report tests and results from a new approach to the spectral density and the mode number distribution of the Dirac operator in lattice gauge theories. The algorithm generates the spectral density of the lattice Dirac operator as a continuous function over all scales of the complete eigenvalue spectrum. This is distinct from an earlier method where the integrated spectral density (mode number) was calculated efficiently for some preselected fixed range of the integration. The new algorithm allows global studies like the chiral condensate from the Dirac spectrum at any scale including the cutoff-dependent IR and UV range of the spectrum. Physics applications include the scale-dependent mass anomalous dimension, spectral representation of composite fermion operators, and the crossover transition from the $ε$-regime of Random Matrix Theory to the p-regime in chiral perturbation theory. We present thorough tests of the algorithm in the 2-flavor sextet SU(3) gauge theory that we continue to pursue for its potential as a minimal realization of the composite Higgs scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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