Abstract
We study partial supersymmetry breaking from mathcal{N} = 2 to mathcal{N} = 1 by adding non-linear terms to the mathcal{N} = 2 supersymmetry transformations. By exploiting the necessary existence of a deformed supersymmetry algebra for partial breaking to occur, we systematically use mathcal{N} = 2 projective superspace with central charges to provide a streamlined setup. For deformed mathcal{O} (2) and mathcal{O} (4) hypermultiplets, besides reproducing known results, we describe new models exhibiting partial supersymmetry breaking with and without higher-derivative interactions.
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