Physics of strongly coupled N=1 supersymmetric SO(Nc) gauge theories

AbstractWe 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)×SU(Nf−Nc) as non-abelian 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