Kinetic theory of transport coefficients near Tc in a dynamic spherical model

Kinetic transport coefficients are studied in the vicinity of the critical point for the dynamic spherical model. The solution of the kinetic equation leads to divergent transport coefficients at Tc for the thermal conductivity and sound attenuation in contrast to the earlier results of Ma and Senbetu. Their method is generalized to obtain the particle diffusion constant and viscosity, which are nondivergent at Tc. A comparison to modemode coupling theories is also given. © 1977 The American Physical Society.