论文标题
多体链样珠子弹簧模型中动态诱导构象的模式选择性
Mode selectivity of dynamically induced conformation in many-body chain-like bead-spring model
论文作者
论文摘要
我们考虑由由僵硬弹簧连接的珠子组成的链的构象，其中构象取决于连续两个弹簧之间的弯曲角。构象不仅通过给定的弯曲电势，而且还通过快速弹簧运动稳定或不稳定，弹簧运动的稳定取决于其激发的正常模式。这种稳定机制已在先前在三体系统上的工作中被命名为动态诱导的构象。我们扩展了对多体链样珠弹簧系统中动态诱导构象的分析。弹簧的正常模式取决于构象，动态稳定的简单规则是，最低的特征频模式有助于构象的稳定。特征频率的高度是，不稳定越多。我们通过执行数值模拟来验证理论预测。
We consider conformation of a chain consisting of beads connected by stiff springs, where the conformation is determined by the bending angles between the consecutive two springs. A conformation is stabilized or destabilized not only by a given bending potential but also the fast spring motion, and stabilization by the spring motion depends on their excited normal modes. This stabilization mechanism has been named the dynamically induced conformation in a previous work on a three-body system. We extend analyses of the dynamically induced conformation in many-body chain-like bead-spring systems. The normal modes of the springs depend on the conformation, and the simple rule of the dynamical stabilization is that the lowest eigenfrequency mode contributes to the stabilization of the conformation. The high the eigenfrequency is, the more the destabilization emerges. We verify theoretical predictions by performing numerical simulations.
