Construction of Coarse-Grained Molecular Dynamics with Many-Body Non-Markovian Memory.

Construction of Coarse-Grained Molecular Dynamics with Many-Body Non-Markovian Memory.
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利用多体非马尔可夫记忆构建粗粒度分子动力学。

DOI:
10.1103/physrevlett.131.177301
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发表时间:
2023
影响因子:
8.6
通讯作者:
H. Lei
H. Lei
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Liyao Lyu;H. Lei

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我们引入了一种基于机器学习的粗粒度分子动力学模型,该模型忠实地保留了分子间耗散相互作用的多体性质。与常见的经验粗粒度模型不同,本模型是基于 Mori-Zwanzig 形式构建的,自然继承了异构状态相关记忆项,而不是匹配速度自相关函数等平均场度量。数值结果表明,保留记忆项的多体性质对于预测集体运输和扩散过程至关重要,而经验形式通常显示出局限性。
We introduce a machine-learning-based coarse-grained molecular dynamics model that faithfully retains the many-body nature of the intermolecular dissipative interactions. Unlike the common empirical coarse-grained models, the present model is constructed based on the Mori-Zwanzig formalism and naturally inherits the heterogeneous state-dependent memory term rather than matching the mean-field metrics such as the velocity autocorrelation function. Numerical results show that preserving the many-body nature of the memory term is crucial for predicting the collective transport and diffusion processes, where empirical forms generally show limitations.
DOI: 10.1021/issn.1520-6106
发表时间: --
期刊: --
影响因子: --
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DOI: 10.1209/0295-5075/19/3/001
发表时间: 1992-06-01
期刊: EUROPHYSICS LETTERS
影响因子: --
作者:
HOOGERBRUGGE, PJ;KOELMAN, JMVA
通讯作者: KOELMAN, JMVA