The Equation of State for Solution of Semiflexible Polymer Chains

We formulate a self-consistent procedure for calculation of thermodynamic and structural properties of polymer solutions based on the Gaussian equivalent representation method (GER) for functional integrals calculation beyond the mean-field approximaton. We show that an equation of state, potential of mean force of interaction monomer-monomer, and persistent length should be defined self-consistently by solving of some system of coupled equation.