Abstract
We perform a series of dimensional reductions of the 6d, \( \mathcal{N} \) = (2, 0) SCFT on S 2 × Σ × I × S 1 down to 2d on Σ. The reductions are performed in three steps: (i) a reduction on S 1 (accompanied by a topological twist along Σ) leading to a supersymmetric Yang-Mills theory on S 2 × Σ × I, (ii) a further reduction on S 2 resulting in a complex Chern-Simons theory defined on Σ × I, with the real part of the complex Chern-Simons level being zero, and the imaginary part being proportional to the ratio of the radii of S 2 and S 1, and (iii) a final reduction to the boundary modes of complex Chern-Simons theory with the Nahm pole boundary condition at both ends of the interval I, which gives rise to a complex Toda CFT on the Riemann surface Σ. As the reduction of the 6d theory on Σ would give rise to an \( \mathcal{N} \) = 2 supersymmetric theory on S 2 × I × S 1, our results imply a 4d-2d duality between four-dimensional \( \mathcal{N} \) = 2 supersymmetric theory with boundary and two-dimensional complex Toda theory.
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Luo, Y., Tan, MC., Vasko, P. et al. Four-dimensional \( \mathcal{N} \) = 2 supersymmetric theory with boundary as a two-dimensional complex Toda theory. J. High Energ. Phys. 2017, 121 (2017). https://doi.org/10.1007/JHEP05(2017)121
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DOI: https://doi.org/10.1007/JHEP05(2017)121