D-brane Instantons as Gauge Instantons in Orientifolds of Chiral Quiver Theories

Understand

Systems of D3-branes at orientifold singularities can receive non-perturbative D-brane instanton corrections, inducing field theory operators in the 4d effective theory.

• In certain non-chiral examples, these systems have been realized as the infrared endpoint of a Seiberg duality cascade, in which the D-brane instanton effects arise from strong gauge theory dynamics.
• We present the first UV duality cascade completion of chiral D3-brane theories, in which the D-brane instantons arise from gauge theory dynamics.
• Chiral examples are interesting because the instanton fermion zero mode sector is topologically protected, and therefore lead to more robust setups.