Harmonic Superspace: Some New Trends
Evgeny A. Ivanov
Abstract
We give a brief account of two recent applications of the harmonic superspace method: (i) an off-shell description of torsionful (4,4) supersymmetric 2D sigma models in the framework of SU(2)× SU(2) harmonic superspace and (ii) the harmonic superspace formulation of ``small'' N=4 SU(2) superconformal algebra and the related super KdV hierarchy.
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