| Issue |
Europhys. Lett.
Volume 62, Number 6, June 2003
|
|
|---|---|---|
| Page(s) | 848 - 854 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00450-8 | |
| Published online | 01 June 2003 | |
Dynamics of the constrained polymer collapse
1
Materials Science Division, Argonne National Laboratory 9700 S. Cass Avenue, Argonne, IL 60439, USA
2
Institute for Nonlinear Science, University California, San Diego La Jolla, CA 92093-0402, USA
Received:
27
January
2003
Accepted:
15
April
2003
The dynamics of polymer collapse with a fixed distance between
endpoints is studied analytically and numerically by the
Nosé-Hoover algorithm. We find that at the pearling stage of the
collapse the number of pearls decays as 
leading to
anomalously long collapse time. To understand the effect of
Stokes drag we reduced the problem of long-polymer-chain collapse
to the one-dimensional diffusion-limited coalescence of
particles with the mass-dependent mobility. In this case the
number of pearls decays slower, as 
.
PACS: 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling / 83.10.Rs – Computer simulation of molecular and particle dynamics
© EDP Sciences, 2003
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