论文标题

Yang-Lee Edge奇异性在经典O(n)普遍性课程中的普遍位置

Universal location of Yang-Lee edge singularity in classic O(N) universality classes

论文作者

Johnson, Gregory, Rennecke, Fabian, Skokov, Vladimir V.

论文摘要

我们采用衍生范围扩展的临近领先顺序采用功能性重归其化组方法,完善了对Yang-Lee边缘奇异性在经典O(N)通用类别中的位置的早期发现。对于QCD的普遍性类别,在三个维度上,我们发现$ | z_c |/r_χ^{1/γ} = 1.612(9),\ 1.597(3)$ for $ n = 2 $,$ 4 $相应地。我们还建立了$ | z_c | = 2.04(8),\ 1.69(3)$ for $ n = 2 $,$ 4 $,尽管具有更大的系统错误。

Employing the functional renormalization group approach at next-to-leading order of the derivative expansion, we refine our earlier findings for the location of the Yang-Lee edge singularity in classic O(N) universality classes. For the universality classes of interest to QCD, in three dimensions, we found $|z_c|/R_χ^{1/γ} = 1.612(9),\ 1.597(3)$ for $N=2$, $4$ correspondingly. We also established $|z_c| = 2.04(8),\ 1.69(3)$ for $N=2$, $4$ albeit with greater systematic error.

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