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Branes, Orientifolds and Chiral Gauge Theories

Shmuel Elitzur, Amit Giveon, David Kutasov, David Tsabar

Abstract

We discuss some aspects of the physics of branes in the presence of orientifolds and the corresponding worldvolume gauge dynamics. We show that at strong coupling orientifolds sometimes turn into bound states of orientifolds and branes, and give a worldsheet argument for the flip of the sign of an orientifold plane split into two disconnected parts by an NS fivebrane. We also describe the moduli space of vacua of N=2 supersymmetric gauge theories with symplectic and orthogonal gauge groups, and analyze a set of four dimensional N=1 supersymmetric gauge theories with chiral matter content using branes.

Branes, Orientifolds and Chiral Gauge Theories

Abstract

We discuss some aspects of the physics of branes in the presence of orientifolds and the corresponding worldvolume gauge dynamics. We show that at strong coupling orientifolds sometimes turn into bound states of orientifolds and branes, and give a worldsheet argument for the flip of the sign of an orientifold plane split into two disconnected parts by an NS fivebrane. We also describe the moduli space of vacua of N=2 supersymmetric gauge theories with symplectic and orthogonal gauge groups, and analyze a set of four dimensional N=1 supersymmetric gauge theories with chiral matter content using branes.

Paper Structure

This paper contains 9 sections, 19 equations.

Table of Contents

  1. Introduction and Discussion
  2. Systems With Sixteen Supercharges
  3. Systems With Eight Supercharges
  4. Systems With Four Supercharges
  5. A Chiral Brane Configuration
  6. The Case $\theta=0$
  7. The Case $\theta=\frac{\pi}{2}$
  8. The General Case
  9. Duality