N = 4 supersymmetric Eguchi-Hanson sigma model in d = 1
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We show that it is possible to construct a supersymmetric mechanics with four supercharges possessing not conformally flat target space. A general idea of constructing such models is presented. A particular case with Eguchi-Hanson target space is investigated in detail: we present the standard and quotient approaches to get the Eguchi-Hanson model, demonstrate their equivalence, give a full set of nonlinear constraints, study their properties and give an explicit expression for the target space metric.
Key wordssupersymmetric mechanics nonlinear off-shell constraints Eguchi-Hanson sigma model hyper Kahler manifold
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