EXACT DYNAMICAL CORRELATION-FUNCTIONS OF CALOGERO-SUTHERLAND MODEL AND ONE-DIMENSIONAL FRACTIONAL STATISTICS

One-dimensional model of nonrelativistic particles with inverse-square interaction potential known as the Calogero-Sutherland model is shown to possess fractional statistics. Using the theory of Jack polynomials the exact dynamical density-density correlation function and the hole propagator part of one-particle Green's function at any rational interaction coupling constant are obtained and used to show clear evidences of the fractional exclusion statistics in the sense of Haldane's ''generalized Pauli exclusion principle.'' This model is also endowed with the corresponding natural exchange statistics.