Dynamically induced conformation depending on excited normal modes of fast oscillation
Dynamically induced conformation depending on excited normal modes of fast oscillation
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DOI：
10.1103/physreve.105.064201
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发表时间：
2022-06-01
影响因子：
2.4
通讯作者：
Toda，Mikito
中科院分区：
文献类型：
--
作者：
Yamaguchi，Yoshiyuki Y.;Yanagita，Tatsuo;Toda，Mikito
我们提出了一个简单的珠弹簧模型，由两个刚性弹簧连接的三个珠子构象的动力学效应。由两个弹簧之间的弯曲角度定义的构象不仅由取决于弯曲角度的给定势能函数确定，而且由构成有效势的弹簧的快速运动确定。因此，与有效势的局部最小值相对应的构象被称为动态诱导构象。我们发展了一个理论，使用多尺度分析和平均方法来获得有效的潜力。一个值得注意的结果是，有效的潜力取决于激励的正常模式的弹簧和弹簧能量的大小。数值验证了所得到的有效势的有效性。
We present dynamical effects on conformation in a simple bead-spring model consisting of three beads connected by two stiff springs. The conformation defined by the bending angle between the two springs is determined not only by a given potential energy function depending on the bending angle, but also by fast motion of the springs which constructs the effective potential. A conformation corresponding with a local minimum of the effective potential is hence called the dynamically induced conformation. We develop a theory to derive the effective potential using multiple-scale analysis and the averaging method. A remarkable consequence is that the effective potential depends on the excited normal modes of the springs and amount of the spring energy. Efficiency of the obtained effective potential is numerically verified.