Active space approaches combining coupled-cluster and perturbation theory for ground states and excited states
Active space approaches combining coupled-cluster and perturbation theory for ground states and excited states
复制标题
结合耦合团簇和基态和激发态微扰理论的主动空间方法
DOI:
10.1080/00268976.2020.1808726
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发表时间:
2020
影响因子:
1.7
通讯作者:
Berkelbach, Timothy C.
中科院分区:
文献类型:
--
作者:
Lange, Malte F.;Berkelbach, Timothy C.
We evaluate the performance of approaches that combine coupled-cluster and perturbation theory based on a predefined active space of orbitals. Coupled-cluster theory is used to treat excitations that are internal to the active space and perturbation theory is used for all other excitations, which are at least partially external to the active space. We consider a variety of schemes that differ in how the internal and external excitations are coupled. Such approaches are presented for ground states and excited states within the equation-of-motion formalism. Results are given for the ionisation potentials and electron affinities of a test set of small molecules and for the correlation energy and band gap of a few periodic solids.
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DOI:
10.1063/1.3700802
发表时间:
2012-04
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Jun Shen;P. Piecuch
通讯作者:
Jun Shen;P. Piecuch
影响因子:
5.5
作者:
Folkestad, Sarai Dery;Koch, Henrik
通讯作者:
Koch, Henrik
影响因子:
5.5
作者:
Cui, Zhi-Hao;Zhu, Tianyu;Chan, Garnet Kin-Lic
通讯作者:
Chan, Garnet Kin-Lic
DOI:
10.1063/1.2907741
发表时间:
2008
期刊:
The Journal of chemical physics
影响因子:
--
作者:
J. Noga;Stanislav Kedžuch;J. Šimunek;S. Ten
通讯作者:
S. Ten
影响因子:
3.7
作者:
Yang Gao;Qiming Sun;Jason M. Yu;M. Motta;James D. McClain;Alec F. White;A. Minnich;G. Chan
通讯作者:
G. Chan