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Abstract
We describe the conditions for extra supersymmetry in N = (2, 2) supersymmetric nonlinear sigma models written in terms of semichiral superfields. We find that some of these models have additional off-shell supersymmetry. The (4, 4) supersymmetry introduces geometrical structures on the target-space which are conveniently described in terms of Yano f-structures and Magri-Morosi concomitants. On-shell, we relate the new structures to the known bi-hypercomplex structures.
Details
1 Uppsala University, Department Physics and Astronomy, Division for Theoretical Physics, Uppsala, Sweden (GRID:grid.8993.b) (ISNI:0000000419369457)
2 Stony Brook University, C.N. Yang Institute for Theoretical Physics, Stony Brook, U.S.A. (GRID:grid.36425.36) (ISNI:0000000122169681)
3 Uppsala University, Department Physics and Astronomy, Division for Theoretical Physics, Uppsala, Sweden (GRID:grid.8993.b) (ISNI:0000000419369457); Stony Brook University, C.N. Yang Institute for Theoretical Physics, Stony Brook, U.S.A. (GRID:grid.36425.36) (ISNI:0000000122169681)




