String Theory and ALE Instantons

Details String Theory and ALE Instantons String Theory and ALE Instantons

1994-10-28

arxiv.org/abs/hep-th/9410222v1

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, phyzzx.tex, ROM2F-94-44

Scientific paper

We show that the classical equations of motion of the low-energy effective field theory describing the massless modes of the heterotic (or type I) string admit two classes of supersymmetric self--dual backgrounds. The first class, which was already considered in the literature, consists of solutions with a (conformally) flat metric coupled to axionic instantons. The second includes Asymptotically Locally Euclidean (ALE) gravitational instantonic backgrounds coupled to gauge instantons through the so--called ``standard embedding''. Talk given by F.Fucito at the XI SIGRAV meeting, Trieste, September 27-30, 1994

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