The role of three-body interactions in two-dimensional polymer collapse
The role of three-body interactions in two-dimensional polymer collapse
复制标题
三体相互作用在二维聚合物塌陷中的作用
DOI:
10.1088/1751-8113/49/21/214001
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Bedini A
中科院分区:
文献类型:
--
作者:
Bedini A
Various interacting lattice path models of polymer collapse in two dimensions demonstrate different critical behaviours. This difference has been without a clear explanation. The collapse transition has been variously seen to be in the Duplantier–Saleur θ-point university class (specific heat cusp), the interacting trail class (specific heat divergence) or even first-order. Here we study via Monte Carlo simulation a generalisation of the Duplantier–Saleur model on the honeycomb lattice and also a generalisation of the so-called vertex-interacting self-avoiding walk model (configurations are actually restricted trails known as grooves) on the triangular lattice. Crucially for both models we have three-and two-body interactions explicitly and differentially weighted. We show that both models have similar phase diagrams when considered in these larger two-parameter spaces. They demonstrate regions for which the collapse transition is first-order for high three-body interactions and regions where the collapse is second order. We conjecture a higher order multiple critical point separating these two types of collapse. It remains to be tested whether the second order lines in both models are in the Duplantier–Saleur θ-point university class for all values of the parameters.
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影响因子:
1.6
作者:
A. Stella;F. Seno;C. Vanderzande
通讯作者:
C. Vanderzande
影响因子:
2.4
作者:
Doukas, Jason;Owczarek, Aleksander L.;Prellberg, Thomas
通讯作者:
Prellberg, Thomas
影响因子:
2.4
作者:
Foster, D. P.
通讯作者:
Foster, D. P.
DOI:
10.1103/physreve.87.052118
发表时间:
2013
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
Z. Fu;Wenan Guo;H. Blöte
通讯作者:
H. Blöte
影响因子:
8.6
作者:
DUPLANTIER, B;SALEUR, H
通讯作者:
SALEUR, H