Supercharges in the HKT Supersymmetric Sigma Models [PDF]
A. V. SmilgaWe construct explicitly classical and quantum supercharges satisfying the standard N = 4 supersymmetry algebra in the supersymmetric sigma models describing the motion over HKT (hyper-Kaehler with torsion) manifolds. One member of the family of superalgebras thus obtained is equivalent to the superalgebra derived and formulated earlier in the purely mathematical framework.View original: http://arxiv.org/abs/1209.0539
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