Crossover behavior for long reptating polymers - art. no. 010801

Citation
E. Carlon et al., Crossover behavior for long reptating polymers - art. no. 010801, PHYS REV E, 6401(1), 2001, pp. 0801
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
6401
Issue
1
Year of publication
2001
Part
1
Database
ISI
SICI code
1063-651X(200107)6401:1<0801:CBFLRP>2.0.ZU;2-G
Abstract
The Rubinstein-Duke model for polymer reptation is analyzed by means of den sity matrix renormalization techniques. It is found that the crossover in t he scaling behavior of polymer renewal time (or viscosity) arises from the competing effect of the contribution due to tube length fluctuations and hi gher-order corrections, which are of opposite sign. Experiments which ought to emphasize both contributions are suggested. The exponent describing the subleading scaling behavior of the diffusion coefficient is also investiga ted.