String junctions on backgrounds with a positively charged orientifold plane

Abstract

By means of the heterotic/type IIB duality, we study properties of junctions on backgrounds with a positively charged orientifold seven-plane and D-branes, which are expected to give seven dimensional Sp(r) gauge theories. We give a modified BPS condition for the junctions and show that it reproduces the adjoint representation of the Sp(r) group.

16 pages + 3 eps figures, LaTeX, a reference added

References in corpus (6)

• Tachyon Condensation on the Brane Antibrane System
• Toroidal Compactification Without Vector Structure
• String Junctions for Arbitrary Lie Algebra Representations
• String Creation and Heterotic-Type I' Duality
• Affine Lie Algebras, String Junctions and 7-Branes
• E_8 flavour multiplets

Cited by in corpus (2)

• Ghost D-branes
• One Loop to Rule Them All: Eight and Nine Dimensional String Vacua from Junctions