Instantons on Gravitons

Details Instantons on Gravitons Instantons on Gravitons

2010-06-30

arxiv.org/abs/1007.0044v1

Commun.Math.Phys.306:449-483,2011

Physics

High Energy Physics

High Energy Physics - Theory

42 pages, 8 figures

Scientific paper

10.1007/s00220-011-1293-y

Yang-Mills instantons on ALE gravitational instantons were constructed by Kronheimer and Nakajima in terms of matrices satisfying algebraic equations. These were conveniently organized into a quiver. We construct generic Yang-Mills instantons on ALF gravitational instantons. Our data are formulated in terms of matrix-valued functions of a single variable, that are in turn organized into a bow. We introduce the general notion of a bow, its representation, its associated data and moduli space of solutions. For a judiciously chosen bow the Nahm transform maps any bow solution to an instanton on an ALF space. We demonstrate that this map respects all complex structures on the moduli spaces, so it is likely to be an isometry, and use this fact to study the asymptotics of the moduli spaces of instantons on ALF spaces.

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