D-brane Bound States and the Generalised ADHM Construction

Abstract

We discuss the sigma model description of a D-string bound to k D-fivebranes in type I string theory. The effective theory is an (0,4) supersymmetric hyper-Kahler with torsion sigma model on the moduli space of Sp(k) instantons on R^4. Upon toroidal compactification to five dimensions the model is related to the type II picture where the target space is a symmetric product of K3's.

17 pages Phyzzx. Minor corrections, to appear in Nucl. Phys. B

References in corpus (3)

• HKT and OKT Geometries on Soliton Black Hole Moduli Spaces
• On The Conformal Field Theory Of The Higgs Branch
• The Coulomb Branch of (4,4) Supersymmetric Field Theories in Two Dimensions

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