Surveying 4d SCFTs twisted on Riemann surfaces

Amariti, Antonio; Cassia, Luca; Penati, Silvia (2017). Surveying 4d SCFTs twisted on Riemann surfaces. Journal of High Energy Physics, 2017(56), pp. 1-28. Springer 10.1007/JHEP06(2017)056

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Within the framework of four dimensional conformal supergravity we consider N = 1, 2, 3, 4 supersymmetric theories generally twisted along the abelian subgroups of the R-symmetry and possibly other global symmetry groups. Upon compactification on constant curvature Riemann surfaces with arbitrary genus we provide an extensive classification of the resulting two dimensional theories according to the amount of super- symmetry that is preserved. Exploiting the c-extremization prescription introduced in arXiv:1211.4030 we develop a general procedure to obtain the central charge for 2d N = (0,2) theories and the expression of the corresponding R-current in terms of the original 4d one and its mixing with the other abelian global currents.

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