The divide-expand-consolidate resolution of the identity second-order Møller-Plesset perturbation (DEC-RI-MP2) theory method introduced in Baudin et al. [J. Chem. Phys. 144, 054102 (2016)] is significantly improved by introducing the Laplace transform of the orbital energy denominator in order to construct the double amplitudes directly in the local basis. Furthermore, this paper introduces the auxiliary reduction procedure, which reduces the set of the auxiliary functions employed in the individual fragments. The resulting Laplace transformed divide-expand-consolidate resolution of the identity second-order Møller-Plesset perturbation method is applied to the insulin molecule where we obtain a factor 9.5 speedup compared to the DEC-RI-MP2 method.
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28 January 2017
Research Article|
January 24 2017
The Laplace transformed divide-expand-consolidate resolution of the identity second-order Møller-Plesset perturbation (DEC-LT-RIMP2) theory method Available to Purchase
Thomas Kjærgaard
Thomas Kjærgaard
qLEAP Center for Theoretical Chemistry, Department of Chemistry,
Aarhus University
, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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Thomas Kjærgaard
qLEAP Center for Theoretical Chemistry, Department of Chemistry,
Aarhus University
, Langelandsgade 140, DK-8000 Aarhus C, Denmark
J. Chem. Phys. 146, 044103 (2017)
Article history
Received:
November 07 2016
Accepted:
December 23 2016
Citation
Thomas Kjærgaard; The Laplace transformed divide-expand-consolidate resolution of the identity second-order Møller-Plesset perturbation (DEC-LT-RIMP2) theory method. J. Chem. Phys. 28 January 2017; 146 (4): 044103. https://doi.org/10.1063/1.4973710
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