N=4, d=1 Supersymmetric Hyper-Kaehler Sigma Models with Isospin Variables

preprint2010arXivOpen access

Abstract

We provide a Lagrangian formulation of \Nf supersymmetric mechanics describing the motion of an isospin carrying particle on conformal to hyper-Kähler spaces in a non-Abelian background gauge field. In two examples we discuss in details, this background field is identified with the field of BPST instantons in the flat and Taub-NUT spaces.

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