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Space-Time Foam From Non-Commutative Instantons

Harry W. Braden, Nikita A. Nekrasov

hep-tharXiv:hep-th/9912019

Abstract

We show that a U(1) instanton on non-commutative R4 corresponds to a supersymmetric non-singular U(1) gauge field on a commutative Kahler manifold X which is a blowup of C2 at a finite number of points. For instanton charge k the manifold X can be viewed as a space-time foam. A direct connection with integrable systems of Calogero-Moser type is established. We also make some comments on the non-abelian case.

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