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arXiv 1806.01385hep-lathep-phhep-th
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近共形系统中算子的梯度流非微扰重整化

Nonperturbative Renormalization of Operators in Near-Conformal Systems Using Gradient Flows

Andrea Carosso, Anna Hasenfratz, Ethan T. Neil

摘要:

我们提出了一个连续的实空间重整化群变换的基础上的梯度流,允许重整化的数值研究,而不需要昂贵的系综匹配。我们应用我们的技术在一个试点研究SU $(3)$规范理论与$N_f = 12$费米子的基本表示,发现质量异常尺寸为$γ_m = 0.23(6)$,与其他微扰和晶格估计一致。我们还提出了第一个晶格计算的核子异常尺寸在这个理论中,发现$γ_N = 0.05(5)$。

英文摘要:

We propose a continuous real space renormalization group transformation based on gradient flow, allowing for a numerical study of renormalization without the need for costly ensemble matching. We apply our technique in a pilot study of SU$(3)$ gauge theory with $N_f = 12$ fermions in the fundamental representation, finding the mass anomalous dimension to be $γ_m = 0.23(6)$, consistent with other perturbative and lattice estimates. We also present the first lattice calculation of the nucleon anomalous dimension in this theory, finding $γ_N = 0.05(5)$.

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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