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Variational boundary conditions for molecular dynamics simulations: Treatment of the loading condition

机译:分子动力学模拟的变分边界条件:加载条件的处理

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This paper aims to extend the variational boundary conditions for molecular dynamics simulation [X. Li, W. E, Variational boundary conditions for molecular dynamics simulations of solids at low temperature, Common. Comp. Phys. 1 (2006) 136-176; X. Li, W. E, Boundary conditions for molecular dynamics simulations at finite temperature: treatment of the heat bath, Phys. Rev. B 76 (2007) 104107], to take into account external loading conditions. Two derivations of the exact boundary conditions are presented, one with Mori-Zwanzig projection procedure, and the other using lattice Green's functions. Approximate boundary conditions, which are more efficient in practice, are then discussed. Finally several numerical experiments are presented to demonstrate the effectiveness of these methods. (C) 2008 Elsevier Inc. All rights reserved.
机译:本文旨在扩展分子动力学模拟的变分边界条件[X。 Li,W.E,低温下固体分子动力学模拟的变分边界条件,常见。比较物理1(2006)136-176; X. Li,W. E,在有限温度下进行分子动力学模拟的边界条件:热浴处理,物理Rev. B 76(2007)104107],以考虑外部加载条件。给出了精确边界条件的两个推导,一个是使用Mori-Zwanzig投影过程,另一个是使用格林格林函数。然后讨论在实践中更有效的近似边界条件。最后,通过几个数值实验证明了这些方法的有效性。 (C)2008 Elsevier Inc.保留所有权利。

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