String junctions on backgrounds with a positively charged orientifold plane
Yosuke Imamura
TL;DR
This paper investigates string junctions on backgrounds with a positively charged orientifold plane, using duality to analyze gauge theories and deriving a modified BPS condition that reproduces the adjoint representation of Sp(r).
Contribution
It introduces a modified BPS condition for junctions on such backgrounds, connecting string theory configurations to gauge group representations.
Findings
Modified BPS condition reproduces Sp(r) adjoint representation
Analysis via heterotic/type IIB duality confirms gauge theory properties
Provides insights into string junctions on orientifold backgrounds
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.
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