Explicit Construction of Yang-Mills Instantons on ALE Spaces

Details Explicit Construction of Yang-Mills Instantons on ALE Spaces Explicit Construction of Yang-Mills Instantons on ALE Spaces

1996-01-30

arxiv.org/abs/hep-th/9601162v1

Nucl.Phys. B473 (1996) 367-404

Physics

High Energy Physics

High Energy Physics - Theory

59 pages, epsf.tex, 2 figures included, uuencoded file

Scientific paper

10.1016/0550-3213(96)00240-4

We describe the explicit construction of Yang-Mills instantons on ALE spaces, following the work of Kronheimer and Nakajima. For multicenter ALE metrics, we determine the abelian instanton connections which are needed for the construction in the non-abelian case. We compute the partition function of Maxwell theories on ALE manifolds and comment on the issue of electromagnetic duality. We discuss the topological characterization of the instanton bundles as well as the identification of their moduli spaces. We generalize the 't Hooft ansatz to SU(2) instantons on ALE spaces and on other hyper-Kahler manifolds. Specializing to the Eguchi-Hanson gravitational background, we explicitly solve the ADHM equations for SU(2) gauge bundles with second Chern class 1/2, 1 and 3/2.

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