Renormalisation group study of polyelectrolyte chains

The behaviour of long unscreened polyelectrolyte chains is studied using field-theoretic renormalisation group methods based on the renormalisation procedure of t'Hooft and Veltman (1972). It is shown that a fixed point exists near dimension six and details are given of the calculation of the critical exponents up to O( epsilon 2 ). It is also shown exactly that, as long as a fixed point exists, the radius of gyration R G is given by R G approximately N v with nu =2/(d-2).