DOI: 10.1063/1.455827. Is coupled cluster singles and doubles (CCSD) more computationally intensive than quadratic configuration interaction (QCISD)?

Is coupled cluster singles and doubles (CCSD) more computationally intensive than quadratic configuration interaction (QCISD)?

10.1063/1.455827

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

It is shown that the recently proposed QCI method including all single and double substitutions has essentially the same computational requirements as the more complete CCSD approach. If properly formulated, the CCSD equations contain at most quadratic terms in the excitation amplitudes.

Bibliography

Scuseria, G. E., & Schaefer, H. F. (1989). Is coupled cluster singles and doubles (CCSD) more computationally intensive than quadratic configuration interaction (QCISD)? The Journal of Chemical Physics, 90(7), 3700â3703.

Authors 2

Gustavo E. Scuseria (first)
Henry F. Schaefer (additional)

References 34 Referenced 1,109

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Dates

Type	When
Created	23 years ago (July 26, 2002, 9:10 a.m.)
Deposited	1 year, 6 months ago (Feb. 10, 2024, 4:19 a.m.)
Indexed	2 weeks, 4 days ago (Aug. 6, 2025, 9:17 a.m.)
Issued	36 years, 4 months ago (April 1, 1989)
Published	36 years, 4 months ago (April 1, 1989)
Published Print	36 years, 4 months ago (April 1, 1989)

Funders 0

None

BibTeX

@article{Scuseria_1989, title={Is coupled cluster singles and doubles (CCSD) more computationally intensive than quadratic configuration interaction (QCISD)?}, volume={90}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.455827}, DOI={10.1063/1.455827}, number={7}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Scuseria, Gustavo E. and Schaefer, Henry F.}, year={1989}, month=apr, pages={3700–3703} }

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