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A coupled cluster approach with triple excitations

Lee, Yoon S., Kucharski, Stanislaw A., Bartlett, Rodney J.·1984·The Journal of Chemical Physics

Abstract

The coupled-cluster model for electron correlation is generalized to include the effects of connected triple excitation contributions. The detailed equations for triple excitation amplitudes are presented, and a simplified version implemented that retains the dominant terms. The model presented, CCSDT-1, provides the energy correct through fourth order and the wave function through second order. The CCSDT-1 model is illustrated by comparing with full CI results for HF, BH, and H2O, the latter at several geometries.

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Metadata

Authors
Lee, Y. S., Kucharski, S. A., & Bartlett, R. J.
Venue
The Journal of Chemical Physics
Published
1984-12-20
Volume
81
Issue
12
Pages
5906-5912
ISSN
  • 0021-9606 (ISSN-L)
  • 1089-7690
OpenAlex
W1972352258
Cited by
520
References
0
FWCI
9.49
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A coupled cluster approach with triple excitations. https://app.cochat.ai/papers/10.1063/1.447591
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Lee, Y. S., Kucharski, S. A., & Bartlett, R. J. (1984). A coupled cluster approach with triple excitations. The Journal of Chemical Physics. https://doi.org/10.1063/1.447591

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.