Intrinsic viscosities for linear and ring polymers using renormalisation group techniques

The complex intrinsic viscosity for a single simple ring polymer in the presence of both self-avoiding and hydrodynamic interactions is calculated using renormalisation group techniques. Results are compared with those for a linear chain and amplitude ratios to an order O( epsilon ) ( epsilon identical to 4-d,d being the spatial dimensionality) are given in the zero-frequency limit.