Abstract
We study supersymmetry enhancement from \( \mathcal{N}=3 \) to \( \mathcal{N}=4 \) proposed by Aharony and Tachikawa by using string junctions in S-folds. The central charges carried by junctions play a central role in our analysis. We consider planer junctions in a specific plane. Before the S-folding they carry two complex central charges, which we denote by Z and \( \overline{Z} \). The S-fold projection eliminates \( \overline{Z} \) as well as one of the four supercharges, and when the supersymmetry is enhanced \( \overline{Z} \) should be reproduced by some non-perturbative mechanism. For the models of ℤ 3 and ℤ 4 S-folds which are expected to give SU(3) and SO(5) \( \mathcal{N}=4 \) theories we compare the junction spectra with those in perturbative brane realization of the same theories. We establish one-to-one correspondence so that Z coincides. By using the correspondence we also give an expression for the enhanced central charge \( \overline{Z} \).
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ArXiv ePc: 1606.07186
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Imamura, Y., Kato, H. & Yokoyama, D. Supersymmetry enhancement and junctions in S-folds. J. High Energ. Phys. 2016, 150 (2016). https://doi.org/10.1007/JHEP10(2016)150
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DOI: https://doi.org/10.1007/JHEP10(2016)150