Quaternion formulation of diffusion quantum Monte Carlo for the rotation of rigid molecules in clusters

被引:27
|
作者
Benoit, DM [1 ]
Clary, DC [1 ]
机构
[1] UCL, Dept Chem, London WC1H 0AJ, England
来源
JOURNAL OF CHEMICAL PHYSICS | 2000年 / 113卷 / 13期
关键词
D O I
10.1063/1.1288788
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A quaternion formulation is used to derive an algorithm for performing calculations on molecular clusters using the quantum diffusion Monte Carlo method. It is assumed that the monomers in the cluster rotate and translate as rigid bodies. The algorithm is tested on the water dimer and the benzene-water cluster. Comparison with dissociation energies and rotational constants obtained with other methods illustrates the accuracy of the algorithm. (C) 2000 American Institute of Physics. [S0021-9606(00)00635-8].
引用
收藏
页码:5193 / 5202
页数:10
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