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Quiver Gauge Theory of Nonabelian Vortices and Noncommutative Instantons in Higher Dimensions

Alexander D. Popov·Richard J. Szabo
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Abstract

We construct explicit BPS and non-BPS solutions of the Yang-Mills equations on the noncommutative space R^{2n}_θx S^2 which have manifest spherical symmetry. Using SU(2)-equivariant dimensional reduction techniques, we show that the solutions imply an equivalence between instantons on R^{2n}_θx S^2 and nonabelian vortices on R^{2n}_θ, which can be interpreted as a blowing-up of a chain of D0-branes on R^{2n}_θinto a chain of spherical D2-branes on R^{2n} x S^2. The low-energy dynamics of these configurations is described by a quiver gauge theory which can be formulated in terms of new geometrical objects generalizing superconnections. This formalism enables the explicit assignment of D0-brane charges in equivariant K-theory to the instanton solutions.

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Alexander D. Popov, Richard J. Szabo. 2006-02-16. Quiver Gauge Theory of Nonabelian Vortices and Noncommutative Instantons in Higher Dimensions. https://doi.org/10.1063/1.2157005

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