Mean Field Theory of the Holon-Spinon System. I

Abstract

Mean field approximation is applied to nonlinear equations of motion in the holon-spinon operator formalism proposed previously. A simple interpolation scheme, which looks very much like the conventional band theory, is thus established between insulating and metallic limits of the tJ model. The transport equation of the normal state is given and critical temperatures of S -wave and D -wave superconducting states are calculated.