Brane-Inspired Orientifold Field Theories

Abstract

In this paper we consider the gauge theory living on the world-volume of a stack of N D3-branes of Type 0B/Ω' I_6(-1)^{F_{L}} and of its orbifolds C^2/Z_2 and C^3/(Z_2 x Z_2). The gauge theories obtained in the three cases are a brane realization of ``orientifold field theories'' having the bosonic sector common with N=4,2,1 super Yang-Mills respectively. In these non-supersymmetric theories, we investigate the possibility of keeping the gauge/gravity correspondence that has revealed itself so successful in the case of supersymmetric theories. In the open string framework we compute the coefficient of the gauge kinetic term showing that the perturbative behaviour of the orientifold field theory can be obtained from the closed string channel in the large N limit, where the theory exhibits Bose-Fermi degeneracy.

27 pages, LaTeX

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• Information on the Super Yang-Mills Spectrum
• Quark Condensate in Massless QCD from Planar Equivalence
• Tree-Level Stability Without Spacetime Fermions: Novel Examples in String Theory
• Predictions for orientifold field theories from type 0' string theory
• Non-Perturbative Planar Equivalence and the Absence of Closed String Tachyons
• Alternative large Nc baryons and holography
• Aspects of Open-Closed Duality in a Background B-Field
• Aspects of Open-Closed Duality in a Background B-Field II
• Skyrmions in Orientifold and Adjoint QCD
• UV/IR Mixing in Noncommutative Field Theories and Open Closed String Duality
• The Gauge/Gravity Correspondence for Non-Supersymmetric Theories
• Closed string exchanges on $C^2/Z_2$ in a background B-field
• Planar Equivalence 2006
• Pair Creation of Open Strings between the Unstable-Dressed D$p$-branes
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