A new approach to strongly coupled plasmas is proposed by a scheme linking the linear and quadratic polarizabilities through a self-consistency requirement. The ingredients of the theory are (a) replacement of the nonequilibrium two-particle correlation function by its velocity average; (b) the connection between the nonequilibrium two-point function and the equilibrium three-point function; (c) the link provided by the nonlinear fluctuation-dissipation theorem between the quadratic polarizability and the three-point function.

• Received 6 August 1974

DOI:https://doi.org/10.1103/PhysRevLett.33.1544