Quadratic configuration interaction

id: quadratic-configuration-interaction-299-2277862
title: Quadratic configuration interaction
text: Quadratic configuration interaction (QCI) is an extension of configuration interaction that corrects for size-consistency errors in single and double excitation CI methods (CISD). Size-consistency means that the energy of two non-interacting molecules calculated directly will be the sum of the energies of the two molecules calculated separately. This method called QCISD was developed in the group of John Pople. It gives results that are comparable to the coupled cluster method, CCSD. QCISD can b
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category slug: encyclopedia
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original url: https://en.wikipedia.org/wiki/Quadratic_configuration_interaction
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date modified: 2022-07-15T22:14:18Z
main entity: {"identifier":"Q7268360","url":"https://www.wikidata.org/entity/Q7268360"}
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