N=4 Supersymmetry and the BPST Instanton

Details N=4 Supersymmetry and the BPST Instanton N=4 Supersymmetry and the BPST Instanton

2010-01-15

arxiv.org/abs/1001.2659v2

Phys.Rev.D81:085021,2010

Physics

High Energy Physics

High Energy Physics - Theory

1+8 pages; v2: two references added, published version

Scientific paper

10.1103/PhysRevD.81.085021

In this paper we construct the Lagrangian and Hamiltonian formulations of N=4 supersymmetric systems describing the motion of an isospin particle on a conformally flat four-manifold with SO(4) isometry carrying the non-Abelian field of a BPST instanton. The conformal factor can be specified to yield various particular systems, such as superconformally invariant mechanics as well as a particle on the four-sphere, the pseudosphere or on R x S^3. The isospin degrees of freedom arise as bosonic components of an additional fermionic N=4 supermultiplet, whose other components are rendered auxiliary by a nonlocal redefinition. Our on-shell component action coincides with the one recently proposed in arXiv:0912.3289.

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