Instantons, finite N=2 Sp(N) theories and the AdS/CFT correspondence

Details Instantons, finite N=2 Sp(N) theories and the AdS/CFT correspondence Instantons, finite N=2 Sp(N) theories and the AdS/CFT correspondence

1999-08-30

arxiv.org/abs/hep-th/9908201v1

JHEP 9911:012,1999

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, jhep.cls

Scientific paper

10.1088/1126-6708/1999/11/012

We examine ADHM multi-instantons in the conformal N=2 supersymmetric Sp(N) gauge theory with one anti-symmetric tensor and four fundamental hypermultiplets. We argue that the ADHM construction and measure can also be deduced from purely field theoretic considerations and also from the dynamics of D-instantons in the presence of D3-branes, D7-branes and an orientifold O7-plane. The measure then admits a large-N saddle-point approximation where the D3-branes disappear but the background is changed to AdS_5 x S^5/Z_2, as expected on the basis of the AdS/CFT correspondence. The large-N measure displays the fractionation of D-instantons at the singularity S^3 in S^5/Z_2 and is described for instanton number k by a certain O(k) matrix model.

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