DRIFT OF A POLYMER IN SOLVENT BY FORCE APPLIED AT ONE POLYMER END

We investigate the effect of hydrodynamic interactions on the non-equilibrium dynamics of an ideal flexible polymer pulled by a constant force applied at one polymer end using the perturbation theory. For moderate force, if the polymer elongation is small, the hydrodynamic interactions are not screened and the velocity and the longitudinal elongation of the polymer are computed using the renormalization group method. For large chain lengths and a finite force the hydrodynamic interactions are only partially screened, which in three dimensions results in unusual logarithmic corrections to the velocity and the longitudinal elongation.