HALDANE EXCLUSION STATISTICS AND 2ND VIRIAL-COEFFICIENT

We show that Haldane's new definition of statistics, when generalized to infinite dimensional Hilbert spaces, is determined by the high temp erature limit of the second virial coefficient. We thus show that this exclusion statistics parameter g of anyons is nontrivial and is compl etely determined by its exchange statistics parameter alpha. We also c ompute g for quasiparticles in the Luttinger model and show that it is equal to alpha.