2015
DOI: 10.1007/s00214-015-1759-7
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Orthogonality-constrained Hartree–Fock and perturbation theory for high-spin open-shell excited states

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Cited by 11 publications
(18 citation statements)
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“…[3][4][5][6][7] The ∆SCF method, which calculates the difference between the two total energies E N ν and E N G , has been commonly used in the QC approaches. They are very accurate but the computational cost required in the QC approaches scales as O(νN n ), where ν represents the number of the peak positions of the PA spectrum [8,9] and n represents the computational cost required in the GS calculation; for example, n = 6 for multi-reference single and double CI (MRDCI). [8] (This is because E N ν is calculated after E N ν−1 , E N ν−2 , • • • , E N G in the orthogonality constrained method.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…[3][4][5][6][7] The ∆SCF method, which calculates the difference between the two total energies E N ν and E N G , has been commonly used in the QC approaches. They are very accurate but the computational cost required in the QC approaches scales as O(νN n ), where ν represents the number of the peak positions of the PA spectrum [8,9] and n represents the computational cost required in the GS calculation; for example, n = 6 for multi-reference single and double CI (MRDCI). [8] (This is because E N ν is calculated after E N ν−1 , E N ν−2 , • • • , E N G in the orthogonality constrained method.…”
Section: Introductionmentioning
confidence: 99%
“…[8] (This is because E N ν is calculated after E N ν−1 , E N ν−2 , • • • , E N G in the orthogonality constrained method. [9]) Due to their heavy computational cost and low parallel efficiency, the QC approaches are not applicable to large molecules. TDDFT is probably the most economic option among the three, but the results strongly depend on a choice of the exchange-correlation functional.…”
Section: Introductionmentioning
confidence: 99%
“…Детали вывода уравнений можно найти в наших предыдущих работах [22,[24][25][26]. Поэтому ограничиваемся формулами, на основе которых были проведены расчеты.…”
Section: методunclassified
“…В соответствии с методологией асимп-тотического проектирования [22,[24][25][26][27] слагаемые при множителе λ s обеспечивают спиновую чистоту, тогда как слагаемые при λ 0 ведут к ортогональности функ-ций (6) и (7), т. е. 0 |ϕ 1 = 0.…”
Section: методunclassified
“…На примере простых молекул было продемонстрировано, что базисные наборы из дистрибутивных s-функций способны в приближении ХФ обеспечивать точность расчета энергии на уровне микрохартри (µНartree) [27][28][29][30]. Однако систематические исследования возможностей дистрибутивных функций для расчета энергии корреляции основного состояния практически не проводились, за исключением работы [31] [33,34]. Впоследствии результаты этих работ были развиты для многократно возбужденных состояний [35].…”
Section: Introductionunclassified