Critical Wess-Zumino models with four supercharges in the functional renormalization group approach

Critical Wess-Zumino models with four supercharges in the functional renormalization group approach
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函数重正化群方法中具有四个增压的关键 Wess-Zumino 模型

DOI:
10.1103/physrevd.98.096005
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发表时间:
2017
期刊:
影响因子:
5
通讯作者:
L. Zambelli
L. Zambelli
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
P. Feldmann;A. Wipf;L. Zambelli

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我们分析了$\mathcal{N}=1$超对称Wess-Zumino模型在三维欧几里德维空间中降维为$\mathcal{N}=2$超对称模型。与四维原始模型和二维$\mathcal{N}=(2,2)$模型一样,超势没有被重整化。这个属性提出了严格的限制,非平凡的不动点解决方案,这是详细研究。我们承认一个依赖于场的波函数重正化,在几何语言涉及到一个K“ahler度规。K“ahler度量不受超对称性的保护,我们在不动点上计算了它的显式形式.此外,我们确定的手征超场和几个关键指数的兴趣,包括校正标度指数$\omega$,在功能重整化群方法的确切量子尺寸。我们比较了在不同截断水平下得到的结果,也探索了动量相关的波函数重整化。最后,我们简要地描述了一个塔的多临界模型在连续维。
We analyze the $\mathcal{N}=1$ supersymmetric Wess-Zumino model dimensionally reduced to the $\mathcal{N}=2$ supersymmetric model in three Euclidean dimensions. As in the original model in four dimensions and the $\mathcal{N}=(2,2)$ model in two dimensions the superpotential is not renormalized. This property puts severe constraints on the non-trivial fixed-point solutions, which are studied in detail. We admit a field-dependent wave function renormalization that in a geometric language relates to a K\"ahler metric. The K\"ahler metric is not protected by supersymmetry and we calculate its explicit form at the fixed point. In addition we determine the exact quantum dimension of the chiral superfield and several critical exponents of interest, including the correction-to-scaling exponent $\omega$, within the functional renormalization group approach. We compare the results obtained at different levels of truncation, exploring also a momentum-dependent wave function renormalization. Finally we briefly describe a tower of multicritical models in continuous dimensions.
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