Baiesi M, Orlandini E
Department of Physics and Astronomy, University of Padua, and INFN, Sezione di Padova,Via Marzolo 8, I-35131 Padova, Italy.
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Jun;89(6):062601. doi: 10.1103/PhysRevE.89.062601. Epub 2014 Jun 19.
We introduce and implement a Monte Carlo scheme to study the equilibrium statistics of polymers in the globular phase. It is based on a model of "interacting elastic lattice polymers" and allows a sufficiently good sampling of long and compact configurations, an essential prerequisite to study the scaling behavior of free energies. By simulating interacting self-avoiding rings at several temperatures in the collapsed phase, we estimate both the bulk and the surface free energy. Moreover from the corresponding estimate of the entropic exponent α-2 we provide evidence that, unlike for swollen and Θ-point rings, the hyperscaling relation is not satisfied for globular rings.
我们引入并实施了一种蒙特卡罗方法来研究球状相中聚合物的平衡统计特性。它基于“相互作用弹性晶格聚合物”模型，能够对长而紧凑的构型进行足够好的采样，这是研究自由能标度行为的一个基本前提。通过在塌缩相的几个温度下模拟相互作用的自回避环，我们估计了体相和表面自由能。此外，根据熵指数α - 2的相应估计，我们提供了证据表明，与溶胀环和θ点环不同，球状环不满足超标度关系。
