Multi-reference Brillouin–Wigner coupled-cluster method with a general model space

Multi-reference Brillouin–Wigner coupled-cluster method with a general model space
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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
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通讯作者:
J. Paldus
J. Paldus
中科院分区:
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作者:
JIȓÍ Pittner *;Xiangzhu Li;J. Paldus

文献摘要

被引文献

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我们描述了一个多参考布里渊-维格纳耦合团(BWCC)方法,它依赖于最近引入的C-条件[X],采用一般模型空间(GMS)。Li,J. Paldus.化学物理杂志,119,5320(2003)。这种推广保留了标准完备模型空间(CMS)BWCC方法的所有基本特征。这使得可以通过仅保留重要的配置来大幅降低所采用的模型空间的维度,从而使计算成本最小化。我们还提出了一个初步的数值试验的结果,使用CC-pVDZ模型的LiH分子。
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.