Communication: Restoring full size extensivity in internally contracted multireference coupled cluster theory.

Communication: Restoring full size extensivity in internally contracted multireference coupled cluster theory.
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通信:恢复内部收缩的多参考耦合集群理论的全尺寸广延性。

DOI:
10.1063/1.4757728
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发表时间:
2012
期刊:
The Journal of chemical physics
影响因子:
--
通讯作者:
Andreas Köhn
Andreas Köhn
中科院分区:
--
文献类型:
--
作者:
M. Hanauer;Andreas Köhn

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在目前的内部收缩多参考耦合聚类理论的实现中,价空间缺乏尺寸广泛性的原因是用于从聚类算子中消除冗余分量的过程。我们提出了一种简单的方法来恢复全尺寸的广泛性,通过执行这一关键步骤的激励算子的基础上是正常有序的相对于多构型参考函数。
The reason for the lack of size extensivity in the valence space in current implementations of internally contracted multireference coupled cluster theories is the procedure used to eliminate redundant components from the cluster operator. We present a simple way to restore full size extensivity by performing this critical step in a basis of excitation operators that are normal ordered with respect to the multiconfigurational reference function.
DOI: 10.1063/1.4718700
发表时间: 2012-05
期刊: The Journal of chemical physics
影响因子: --
作者:
M. Hanauer;Andreas Köhn
通讯作者: M. Hanauer;Andreas Köhn