N=2 Gauge theories on systems of fractional D3/D7 branes
Abstract
We study a bound state of fractional D3/D7-branes in the ten-dimensional space R1,5*R4/Z2 using the boundary state formalism. We construct the boundary actions for this system and show that higher order terms in the twisted fields are needed in order to satisfy the zero-force condition. We then find the classical background associated to the bound state and show that the gauge theory living on a probe fractional D3-brane correctly reproduces the perturbative behavior of a four-dimensional N=2 supersymmetric gauge theory with fundamental matter.
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