Address: Theoretical Physics, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
E-mail: lindoulf@gmail.com
Abstract: We discuss additional supersymmetries for $\mathcal{N}=(2,2)$ supersymmetric non-linear sigma models described by left and right semichiral superfields.
AMSclassification: primary 81Q60; secondary 51P05.
Keywords: supersymmetry, complex geometry.