论文标题
避免自避免的活性聚合物中的线圈环体转变
The Coil-Globule transition in self-avoiding active polymers
论文作者
论文摘要
我们对主动完全柔性自避免的聚合物进行数值模拟，这是根据有效的单体传导剂相互作用所描述的嵌入溶剂质量的函数。具体而言，通过在不同条件下提取活性聚合物的弗洛里指数，我们能够将线圈细胞透过的位置固定在活性力的不同强度上。值得注意的是，我们发现温度的简单重新缩放能够定性地捕获聚合物的$θ$点的依赖性，而有效波动的振幅。我们讨论了该映射的限制，并表明单体之间的负活性压力与已经在活性硬球的悬浮液中发现的限制也可能存在于活性聚合物中。
We perform numerical simulations of an active fully flexible self-avoiding polymer as a function of the quality of the embedding solvent described in terms of an effective monomer-monomer interaction. Specifically, by extracting the Flory exponent of the active polymer under different conditions, we are able to pin down the location of the coil-globule transition for different strength of the active forces. Remarkably, we find that a simple rescaling of the temperature is capable of qualitatively capture the dependence of the $Θ$-point of the polymer with the amplitude of the active fluctuations. We discuss the limits of this mapping, and suggest that a negative active pressure between the monomers, not unlike the one that has already been found in suspensions of active hard spheres, may also be present in active polymers.
