Multi-reference Brillouin–Wigner coupled-cluster method with a general model space
Multi-reference Brillouin–Wigner coupled-cluster method with a general model space
复制标题
具有一般模型空间的多参考布里渊-维格纳耦合聚类方法
DOI:
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发表时间:
2005
期刊:
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通讯作者:
J. Paldus
中科院分区:
文献类型:
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作者:
JIȓÍ Pittner *;Xiangzhu Li;J. Paldus
We describe a multi-reference Brillouin–Wigner coupled-cluster (BWCC) method that employs a general model space (GMS) by relying on the recently introduced C-conditions [X. Li, J. Paldus. J. chem. Phys., 119, 5320 (2003).] This generalization preserves all the essential features of the standard complete model space (CMS) BWCC method. This makes it possible to substantially reduce the dimension of the model space employed by keeping only important configurations and thus to minimize the computational cost. We also present the results of a preliminary numerical test using the cc-pVDZ model of the LiH molecule.