N=1 Matter from Fractional Branes

Abstract

We study a bound state of fractional D3-branes localized inside the world-volume of fractional D7-branes on the orbifold C^3/Z_2 x Z_2. We determine the open string spectrum that leads to N=1 U(N1)xU(N2)xU(N3)xU(N4) gauge theory with matter having the number of D7-branes as a flavor index. We derive the linearized boundary action of the D7-brane on this orbifold using the boundary state formalism and we discuss the tadpole cancellation. After computing the asymptotic expression of the supergravity solution the anomalies of the gauge theory are reproduced.

arXiv commentLaTeX 20 pages, 1 figure, small changes and references added

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• Probing Flavored Mesons of Confining Gauge Theories by Supergravity
• Gauge/Gravity Correspondence from Open/Closed String Duality
• Brane-Inspired Orientifold Field Theories
• The Gauge/String Correspondence Towards Realistic Gauge Theories
• Non-perturbative gauge superpotentials from supergravity
• Anomalies and Tadpoles in Open/Closed String Duality
• Non conformal gauge theories from D branes
• Effective Lagrangians for QCD, Duality and Exact Results
• N=1 Super QCD and Fractional Branes