New composite superconformal string model with two scales and unification of fundamental interactions

Abstract

A new approach to composite superconformal strings is considered . This composite string model has two scales: first one (~1 Gev) is for edging surfaces and second one (Planck scale) is for ridge surfaces . Nonlinear realization of two-dimensional superconformal symmetry on edging surfaces leads to superconvergence of one-loop planar diagrams. Some features of hadron amplitudes and of hadron spectrum are discussed. Spectrum of closed strings and a possibility of unified theory of fundamental interactions on the basis of this model are considered.