Physics of polymer melts: A novel perspective

Details Physics of polymer melts: A novel perspective Physics of polymer melts: A novel perspective

2000-02-25

arxiv.org/abs/cond-mat/0002407v1

Physics

Condensed Matter

Soft Condensed Matter

10 pages, 1 eps figure included

Scientific paper

We have mapped the physics of polymer melts onto a time-dependent Landau-Ginzburg $|\psi|^4$ field theory using techniques of functional integration. Time in the theory is simply a label for the location of a given monomer along the extent of a flexible chain. With this model, one can show that the limit of infinitesimal concentration of a polymer melt corresponds to a {\em dynamic} critical phenomenon. The transition to the entangled state is also shown to be a critical point. For larger concentrations, when the role of fluctuations is reduced, a mean field approximation is justifiably employed to show the existence of tube-like structures reminiscent of Edwards' model.

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