The density matrix (DM) obtained from Yang’s [Phys. Rev. Lett. 66, 1438 (1991)] divide-and-conquer (DC) Hartree-Fock (HF) calculation is applied to the explicit second-order Møller-Plesset perturbation (MP2) energy functional of the HF DM, which was firstly mentioned by Ayala and Scuseria [J. Chem. Phys. 110, 3660 (1999)] and was improved by Surján [Chem. Phys. Lett. 406, 318 (2005)] as DM-Laplace MP2. This procedure, termed DC-DM MP2, requires the HF DM of holes, for which we propose two evaluation schemes in DC manner. Numerical studies reveal that the DC-DM MP2 energy deviation from canonical MP2 is the same order of magnitude as DC-HF energy deviation from conventional HF whichever type of hole DM is adopted. It is also confirmed that the central processing unit time of DC-DM MP2 is less than that of DM-Laplace MP2 because the DC-HF DM is sparser than conventional DM.
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28 November 2006
Research Article|
November 28 2006
Second-order Møller-Plesset perturbation energy obtained from divide-and-conquer Hartree-Fock density matrix Available to Purchase
Masato Kobayashi;
Masato Kobayashi
Department of Chemistry, School of Science and Engineering,
Waseda University
, Tokyo 169-8555, Japan
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Tomoko Akama;
Tomoko Akama
Department of Chemistry, School of Science and Engineering,
Waseda University
, Tokyo 169-8555, Japan
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Hiromi Nakai
Hiromi Nakai
a)
Department of Chemistry, School of Science and Engineering,
Waseda University
, Tokyo 169-8555, Japan
Search for other works by this author on:
Masato Kobayashi
Department of Chemistry, School of Science and Engineering,
Waseda University
, Tokyo 169-8555, Japan
Tomoko Akama
Department of Chemistry, School of Science and Engineering,
Waseda University
, Tokyo 169-8555, Japan
Hiromi Nakai
a)
Department of Chemistry, School of Science and Engineering,
Waseda University
, Tokyo 169-8555, Japana)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
J. Chem. Phys. 125, 204106 (2006)
Article history
Received:
July 21 2006
Accepted:
October 12 2006
Citation
Masato Kobayashi, Tomoko Akama, Hiromi Nakai; Second-order Møller-Plesset perturbation energy obtained from divide-and-conquer Hartree-Fock density matrix. J. Chem. Phys. 28 November 2006; 125 (20): 204106. https://doi.org/10.1063/1.2388261
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