In this chapter1, we review how effective theories of mesons and baryons become exactly soluble in the large-N c limit. We start with a generic hadron Lagrangian constrained only by certain… Expand

Electro magnetic transition form factors for the excitation of the Δ33-resonance are evaluated in the Skyrme model. They crucially rely on rotationally induced deformations of the hedgehog soliton… Expand

Starting from the large-$N$ power counting which suggests that the baryons are QCD solitons, the authors derive an exact large-$N$ equation identical to the so-called bootstrap condition of static… Expand

Quasielastic meson-baryon scattering is reformulated, in t-channel language (meson exchange) instead of s-channel language (baryon-resonance formation), using skyrmion methods. A new selection rule… Expand

When a massless, isospinor Dirac field is confined to a finite region of space by means of a chiral boundary condition parametrized by an angle theta, the baryon number of the vacuum is shown to be… Expand