FLUX-CARRYING FERMIONS AND THE 2ND VIRIAL-COEFFICIENT

The second virial coefficient B2 for a system of spin-one-half flux-carrying fermions is computed. It is found that there arise significant differences from known results for the corresponding spinless system. Apart from the existence of cusps and a restricted periodicity of B2 when viewed as a function of the flux parameter , one obtains here the remarkable result that there exist discontinuities in B2 at all even, nonzero values of . © 1990 The American Physical Society.