Cooperative Dynamics in Unentangled Polymer Fluids

Details Cooperative Dynamics in Unentangled Polymer Fluids Cooperative Dynamics in Unentangled Polymer Fluids

2001-10-19

arxiv.org/abs/cond-mat/0110423v1

Physics

Condensed Matter

Statistical Mechanics

9 pages, latex, 3 figures

Scientific paper

10.1103/PhysRevLett.88.025901

We present a Generalized Langevin Equation for the dynamics of interacting semiflexible polymer chains, undergoing slow cooperative dynamics. The calculated Gaussian intermolecular center-of-mass and monomer potentials, wich enter the GLE, are in quantitative agreement with computer simulation data. The experimentally observed, short-time subdiffusive regime of the polymer mean-square displacements, emerges here from the competition between the intramolecular and the intermolecular mean-force potentials.

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