Reparametrization of the Colle-Salvetti formula.
Reparametrization of the Colle-Salvetti formula.
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DOI:
10.1098/rsos.211333
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发表时间:
2022-01
影响因子:
3.5
通讯作者:
Cox H
中科院分区:
文献类型:
--
作者:
Baskerville AL;Targema M;Cox H
We investigate the Colle–Salvetti (CS) formula, the basis of the Lee, Yang and Parr (LYP) correlation functional used in approximate density functional theory. The CS formula is reparametrized using high-accuracy Hartree–Fock (HF) wavefunctions to determine the accuracy of the formula to calculate anions. Fitting to the hydride ion or the two-electron system just prior to electron detachment at the HF level of theory does not, in general, improve the calculated correlation energies using the parameters derived from the CS/LYP method. An analysis of the CS parameters used in the popular LYP functional demonstrates the ingenuity and perhaps fortuitousness of the original formulation by CS.
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影响因子:
1.4
作者:
Chernov, N.;Huang, Q.;Ma, H.
通讯作者:
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