论文标题
测试Yukawa一组分等离子体的桥梁功能的同构不变性。 ii。短距离
Testing the isomorph invariance of the bridge functions of Yukawa one-component plasmas. II. Short range
论文作者
论文摘要
人们已经猜想，沿着R-simple液体类别的恒定熵的相位图线几乎保持不变。在同伴论文中，该假设已被证实了相关空隙之外的Yukawa桥梁功能。为了完成不变性ANSATZ的测试，在这里计算了Yukawa桥的功能与腔分布方法内部计算在相关空隙内，并从具有标记粒子对的超长分子动力学模拟中输入。开发了一种通用方法，用于设计标记的对相互作用电位，从而导致统一统计数据的获取。开发了推断技术来确定零分离处的桥接功能值。量化了不同错误来源的效果。 Yukawa桥功能在短范围内也几乎是同构不变的。讨论了对所有R-Simple系统和实际含义的概括。
It has been conjectured that bridge functions remain nearly invariant along phase diagram lines of constant excess entropy for the class of R-simple liquids. In the companion paper, this hypothesis has been confirmed for Yukawa bridge functions outside the correlation void. In order to complete the testing of the invariance ansatz, Yukawa bridge functions are here computed inside the correlation void with the cavity distribution method and input from ultra-long molecular dynamics simulations featuring a tagged particle pair. A general methodology is developed for the design of the tagged pair interaction potential that leads to the acquisition of uniform statistics. An extrapolation technique is developed to determine the bridge function value at zero separation. The effect of different sources of errors is quantified. Yukawa bridge functions are demonstrated to be nearly isomorph invariant also in the short range. Generalization to all R-simple systems and practical implications are discussed.
