Interactions of type IIB D-branes from D-instanton matrix model

Details Interactions of type IIB D-branes from D-instanton matrix model Interactions of type IIB D-branes from D-instanton matrix model

1997-05-15

arxiv.org/abs/hep-th/9705120v4

Nucl.Phys.B511:629-646,1998

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, latex. misprints corrected, to appear in NPB

Scientific paper

10.1016/S0550-3213(97)00658-5

We compute long-distance interaction potentials between certain 1/2 and 1/4 supersymmetric D-brane configurations of type IIB theory, demonstrating detailed agreement between classical supergravity and one-loop instanton matrix model results. This confirms the interpretation of D-branes as described by classical matrix model backgrounds as being `populated' by large number of D-instantons, i.e. as corresponding to non-marginal bound states of branes of lower dimensions. In the process, we establish precise relation between matrix model expressions and non-abelian F^4 terms in the super Yang-Mills effective action.

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