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
复制标题
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
影响因子:
5
通讯作者:
L. Zambelli
中科院分区:
文献类型:
--
作者:
P. Feldmann;A. Wipf;L. Zambelli
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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