NONIDENTICAL ANYONS AND NEW STATISTICS FOR SPINONS AND HOLONS

We discuss the various existing proposals for the statistics of holons and spinons (the proposed fundamental excitations of the tJ model for HTSC), and we present new anyonic alternatives. We generalize Wilczek 's realization of anyons to include non-identical anyons with mutual s tatistics and concentrate on particular cases which preserve time-reve rsal symmetry. Under the restriction of time-reversal symmetry, we fin d two additional possibilities for the statistics of holons and spinon s - either both holons and spinons are bosons or both are fermions. In addition they obey an antisymmetric mutual statistics. We discuss the pairing mechanism of holons in this model, and the microscopic origin s for this statistical behavior.