Physics of Strongly Coupled N=1 Supersymmetric SO(Nc) Gauge Theories
Abstract
We construct an effective superpotential that describes dynamical flavor symmetry breaking in supersymmetric N=1 SO(Nc) theories with Nf-flavor quarks for Nf >= Nc. Our superpotential induces spontaneous flavor symmetry breaking of SU(Nf) down to SO(Nc)xSU(Nf-Nc) as nonabelian residual groups and respects the anomaly-matching property owing to the appearance of massless composite Nambu-Goldstone superfields. In massive SO(Nc) theories, our superpotential provides holomorphic decoupling property and consistent vacuum structure with instanton effect if Nc-2 quarks remain massless. This superpotential may reflect the remnant of physics corresponding to N=2 SO(Nc) theories near the Chebyshev point, which also exhibits dynamical flavor symmetry breaking.
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