We used standard Brownian Dynamics 98 (BD) augmented with global Monte Carlo (MC) moves to evolve the bead positions. For computational expediency we neglected hydrody-namic interaction (HI) between the beads in the BD step. Two kinds of MC moves, (i) backbone pivot and (ii) side chain double bridging were used periodically after several BD steps to induce rapid global conformational changes. This is similar in spirit to what Auhl et al 97 advocated for equilibrating configurations in polymer melts, except that we chose to retain the MC moves for the production run as well. The time step for advancing the beads during a single BD step was 10 -4 , with a total duration of 10 8 time steps or more.