ON THE RELATIVISTIC FIELD-THEORY MODEL OF THE DEUTERON

We suggest a relativistic field theory model of the deuteron. We start from a local unphysical deuteron field, taken as a bound proton-neutr on state at zero binding energy. Following the Nambu-Jona-Lasinio pres cription we construct the physical deuteron field. We describe all par ameters of the physical deuteron in the one-nucleon loop approximation and in leading order of the long-wavelength expansion. The one-pion e xchange contribution to the binding energy calculated in the two-nucle on loop approximation is found small compared with that obtained in th e one-nucleon loop one. The present model can be applied to the descri ption of the decouplet of dibaryons <(10)under bar><over tilde>(f) whe re the deuteron is the component with Y = 2 and I = 0.