6533b82dfe1ef96bd12908e5
RESEARCH PRODUCT
Scale-free static and dynamical correlations in melts of monodisperse and Flory-distributed homopolymers: A review of recent bond-fluctuation model studies
P. PolińskaJörg BaschnagelN. SchulmannHong XuJ. P. WittmerA. JohnerJ. E. ZabelHendrik MeyerJean FaragoA. CavalloSergei Obukhovsubject
Physics010304 chemical physicsScale (ratio)Monte Carlo methodDispersityFOS: Physical sciencesStatistical and Nonlinear PhysicsCondensed Matter - Soft Condensed Matter01 natural sciences3. Good healthConstraint (information theory)Condensed Matter::Soft Condensed MatterChain (algebraic topology)0103 physical sciencesExcluded volumeCompressibilitySoft Condensed Matter (cond-mat.soft)Statistical physics010306 general physicsMathematical PhysicsTopology (chemistry)description
It has been assumed until very recently that all long-range correlations are screened in three-dimensional melts of linear homopolymers on distances beyond the correlation length $\xi$ characterizing the decay of the density fluctuations. Summarizing simulation results obtained by means of a variant of the bond-fluctuation model with finite monomer excluded volume interactions and topology violating local and global Monte Carlo moves, we show that due to an interplay of the chain connectivity and the incompressibility constraint, both static and dynamical correlations arise on distances $r \gg \xi$. These correlations are scale-free and, surprisingly, do not depend explicitly on the compressibility of the solution. Both monodisperse and (essentially) Flory-distributed equilibrium polymers are considered.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-07-22 |