High-level coupled-cluster energetics by Monte Carlo sampling and moment expansions: Further details and comparisons
Abstract
We recently proposed a novel approach to converging electronic energies equivalent to high-level coupled-cluster (CC) computations by combining the deterministic CC(P;Q) formalism with the stochastic configuration interaction (CI) and CC Quantum Monte Carlo (QMC) propagations. This article extends our initial study [J. E. Deustua, J. Shen, and P. Piecuch, Phys. Rev. Lett. 119, 223003 (2017)], which focused on recovering the energies obtained with the CC method with singles, doubles, and triples (CCSDT) using the information extracted from full CI QMC and CCSDT-MC, to the CIQMC approaches truncated at triples and quadruples. It also reports our first semi-stochastic CC(P;Q) calculations aimed at converging the energies that correspond to the CC method with singles, doubles, triples, and quadruples (CCSDTQ). The ability of the semi-stochastic CC(P;Q) formalism to recover the CCSDT and CCSDTQ energies, even when electronic quasi-degeneracies and triply and quadruply excited clusters become substantial, is illustrated by a few numerical examples, including the F–F bond breaking in F2, the automerization of cyclobutadiene, and the double dissociation of the water molecule.
- Authors:
-
- Michigan State Univ., East Lansing, MI (United States). Dept. of Chemistry
- Michigan State Univ., East Lansing, MI (United States). Dept. of Chemistry; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1849380
- Alternate Identifier(s):
- OSTI ID: 1772153
- Grant/Contract Number:
- FG02-01ER15228
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Chemical Physics
- Additional Journal Information:
- Journal Volume: 154; Journal Issue: 12; Journal ID: ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Chemistry; Physics; Configuration interaction; Coupled-cluster methods; Correlation-consistent basis sets; Electronic correlation; Coupled-cluster singles, doubles, triples, and quadruples; Monte Carlo methods; Potential energy surfaces
Citation Formats
Deustua, J. Emiliano, Shen, Jun, and Piecuch, Piotr. High-level coupled-cluster energetics by Monte Carlo sampling and moment expansions: Further details and comparisons. United States: N. p., 2021.
Web. doi:10.1063/5.0045468.
Deustua, J. Emiliano, Shen, Jun, & Piecuch, Piotr. High-level coupled-cluster energetics by Monte Carlo sampling and moment expansions: Further details and comparisons. United States. https://doi.org/10.1063/5.0045468
Deustua, J. Emiliano, Shen, Jun, and Piecuch, Piotr. Mon .
"High-level coupled-cluster energetics by Monte Carlo sampling and moment expansions: Further details and comparisons". United States. https://doi.org/10.1063/5.0045468. https://www.osti.gov/servlets/purl/1849380.
@article{osti_1849380,
title = {High-level coupled-cluster energetics by Monte Carlo sampling and moment expansions: Further details and comparisons},
author = {Deustua, J. Emiliano and Shen, Jun and Piecuch, Piotr},
abstractNote = {We recently proposed a novel approach to converging electronic energies equivalent to high-level coupled-cluster (CC) computations by combining the deterministic CC(P;Q) formalism with the stochastic configuration interaction (CI) and CC Quantum Monte Carlo (QMC) propagations. This article extends our initial study [J. E. Deustua, J. Shen, and P. Piecuch, Phys. Rev. Lett. 119, 223003 (2017)], which focused on recovering the energies obtained with the CC method with singles, doubles, and triples (CCSDT) using the information extracted from full CI QMC and CCSDT-MC, to the CIQMC approaches truncated at triples and quadruples. It also reports our first semi-stochastic CC(P;Q) calculations aimed at converging the energies that correspond to the CC method with singles, doubles, triples, and quadruples (CCSDTQ). The ability of the semi-stochastic CC(P;Q) formalism to recover the CCSDT and CCSDTQ energies, even when electronic quasi-degeneracies and triply and quadruply excited clusters become substantial, is illustrated by a few numerical examples, including the F–F bond breaking in F2, the automerization of cyclobutadiene, and the double dissociation of the water molecule.},
doi = {10.1063/5.0045468},
journal = {Journal of Chemical Physics},
number = 12,
volume = 154,
place = {United States},
year = {Mon Mar 22 00:00:00 EDT 2021},
month = {Mon Mar 22 00:00:00 EDT 2021}
}
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Works referencing / citing this record:
Is Externally Corrected Coupled Cluster Always Better Than the Underlying Truncated Configuration Interaction?
journal, June 2021
- Magoulas, Ilias; Gururangan, Karthik; Piecuch, Piotr
- Journal of Chemical Theory and Computation, Vol. 17, Issue 7