Non-commutative (D)-instantons

Details Non-commutative (D)-instantons Non-commutative (D)-instantons

2005-11-03

arxiv.org/abs/hep-th/0511036v2

JHEP0605:069,2006

Physics

High Energy Physics

High Energy Physics - Theory

36 pages, 3 figures, JHEP class (included); a few references added

Scientific paper

10.1088/1126-6708/2006/05/069

We study systems of D3 and D(-1) branes in a NS-NS magnetic background and show that, when the brane configuration is stable, the physical degrees of freedom of the open strings with at least one end-point on the D-instantons describe the ADHM moduli of instantons for non-commutative gauge theories. We also prove that disk diagrams with mixed boundary conditions are the sources for the classical profile of the non-commutative gauge instantons in the singular gauge. We finally compare the string theory description in a large distance expansion with the non-commutative ADHM construction in the singular gauge and find complete agreement at perturbative level in the non-commutativity parameter.

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