Elimination of Coulomb finite-size effects in quantum many-body simulations

Elimination of Coulomb finite-size effects in quantum many-body simulations
复制标题

量子多体模拟中库仑有限尺寸效应的消除

DOI:
10.1103/physrevb.55.r4851
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发表时间:
1997
期刊:
影响因子:
3.7
通讯作者:
M. Chou
M. Chou
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
A. Williamson;G. Rajagopal;R. Needs;L. M. Fraser;W. Foulkes;Yan Wang;M. Chou

文献摘要

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引入了模型相互作用,用于使用周期性边界条件的库仑系统的量子多体模拟。该相互作用产生的有限尺寸效应比标准埃瓦尔德相互作用小得多,并且计算速度也快得多。具有多达 1000 个电子的金刚石结构硅的变分量子蒙特卡罗模拟证明了我们方法的有效性。
A model interaction is introduced for quantum many-body simulations of Coulomb systems using periodic boundary conditions. The interaction gives much smaller finite size effects than the standard Ewald interaction and is also much faster to compute. Variational quantum Monte Carlo simulations of diamond-structure silicon with up to 1000 electrons demonstrate the effectiveness of our method.