Evidence For Seiberg Duality
The moduli spaces of the dual theories are identical.
The global symmetries agree, as do the charges of the mesons and baryons.
In certain cases it reduces to ordinary electromagnetic duality.
It may be embedded in string theory via Hanany-Witten brane cartoons consisting of intersecting D-branes. There it is realized as the motion of an NS5-brane which is conjectured to preserve the universality class.
Six nontrivial anomalies may be computed on both sides of the duality, and they agree as they must in accordance with Gerard 't Hooft's anomaly matching conditions. The role of the additional fundamental meson superfield M in the dual theory is very crucial in matching the anomalies. The global gravitational anomalies also match up as the parity of the number of chiral fields is the same in both theories. The R-charge of the Weyl fermion in a chiral superfield is one less than the R-charge of the superfield. The R-charge of a gaugino is +1.
| anomaly | SQCD | dual theory |
|---|---|---|
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