Nonexponential dynamic relaxation of randomly branched polymers in good solvents

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Abstract
Monte Carlo simulations were carried out to study the dynamics of randomly branched polymers in good solvents. Two types of time scales were observed: fast relaxation times corresponding to the internal contraction motions and slower relaxation times corresponding to the overall rotational motions of the polymers. The former is associated with autocorrelation functions that exhibit nonexponential decay behavior, a signature of the dynamics of random systems. The latter is associated with the usual exponential decay behavior, typical of linear or regularly branched polymers.