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Generalization of Langevin Dynamics from Spatio-Temporal Dressed Dynamics Perspective.
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.jpca.0c00343 Kaicheng Zhu 1 , Haibin Su 1
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.jpca.0c00343 Kaicheng Zhu 1 , Haibin Su 1
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Understanding multiscale dynamics characteristics has been the holy grail in a broad range of scientific disciplines from physics, chemistry, to biology, and beyond. The seminal Langevin equation successfully unravels remarkable details of Brownian motion dynamics involving stochastic collisions from the fluidic medium. However, extraordinary phenomena beyond the scope of Langevin dynamics were observed to exhibit a series of multiscale dynamic features in recent years. Here, an explicit spatio-temporal coupled kernel is developed to provide the microscopic account for delicate dynamic coupling between particle and medium in the dressed dynamics perspective. This methodology is applied to investigate an aqueous solvation shell model with an explicit spatial boundary to illustrate the significance of spatial and temporal coupling, leading to a general temporal profile of dressed dynamics over 12 orders of magnitude in time In particular, the time-resolved viscosity is formulated to address the remarkable enhancement of viscosity measured by the liquid cell electron microscopy. The understanding of dressed dynamics processes will be greatly enriched by further studies on the detailed dynamics that manifests the microscopic inhomogeneity of medium.
中文翻译：
从时空打扮动力学的角度对兰格文动力学的推广。
从物理，化学，生物学到其他领域，了解多尺度动力学特性一直是广泛的科学学科的圣杯。最具影响力的Langevin方程成功地揭示了涉及流体介质随机碰撞的布朗运动动力学的显着细节。但是，近年来观察到超出Langevin动力学范围的非凡现象表现出一系列多尺度动力学特征。在此，开发了显式的时空耦合内核，以提供从微观动力学角度对粒子与介质之间精细的动态耦合的微观解释。该方法用于研究具有明确空间边界的水溶壳模型，以说明时空耦合的重要性，导致在超过12个数量级的时间范围内的动态变化的总体时间分布。特别是，配制了时间分辨的粘度以解决通过液池电子显微镜测得的粘度显着提高的问题。通过进一步研究表现出介质微观不均匀性的详细动力学，将大大丰富对整装动力学过程的理解。
更新日期：2020-04-24
中文翻译：
从时空打扮动力学的角度对兰格文动力学的推广。
从物理，化学，生物学到其他领域，了解多尺度动力学特性一直是广泛的科学学科的圣杯。最具影响力的Langevin方程成功地揭示了涉及流体介质随机碰撞的布朗运动动力学的显着细节。但是，近年来观察到超出Langevin动力学范围的非凡现象表现出一系列多尺度动力学特征。在此，开发了显式的时空耦合内核，以提供从微观动力学角度对粒子与介质之间精细的动态耦合的微观解释。该方法用于研究具有明确空间边界的水溶壳模型，以说明时空耦合的重要性，导致在超过12个数量级的时间范围内的动态变化的总体时间分布。特别是，配制了时间分辨的粘度以解决通过液池电子显微镜测得的粘度显着提高的问题。通过进一步研究表现出介质微观不均匀性的详细动力学，将大大丰富对整装动力学过程的理解。
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