Branes, Instantons, And Taub-NUT Spaces
نویسنده
چکیده
ALE and Taub-NUT (or ALF) hyper-Kahler four-manifolds can be naturally constructed as hyper-Kahler quotients. In the ALE case, this construction has long been understood in terms of D-branes; here we give a D-brane derivation in the Taub-NUT case. Likewise, instantons on ALE spaces and on Taub-NUT spaces have ADHM-like constructions related to hyper-Kahler quotients. Here we refine the analysis in the Taub-NUT case by making use of a D-brane probe. On leave from Institute for Advanced Study, Princeton NJ 08540 USA. Supported in part by NSF Grant PHY-0503584.
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