## I l Introduction In pseudo-potential theory [1,2], the valence electrons only are explicitely treated quantum mechanically; the influence of the core electrons is simulated by a nonlocal pseudo-potential. The following molecular electronic pseudo-hamiltonian is then used:
Correlated pseudo-potential approach for molecules
β Scribed by D.J. David
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 331 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
somewhat semi-empirical pseudo-potcnlial prwcliurc of tlcnling wilh the clcctron-corrckltion problem is presentccl. It consists of the introtluction ol n corrclntiun factor in coulombic bielectronic integrals. Influcncc of kinetic rncrgy upon lhc corrclalion f;~ctor is t:lkcn into ;~ccount. providin:: sntisfactory variation nlong 2 for the isoclcclroni~ serirs or hrlium. The formalis~n is directly :Ipplk%I,lc for molecules and prcliminnry rrsults for 112 nnd 1:~ arc giwn.
π SIMILAR VOLUMES
The electronrc wavefunctlons and potential tunes for the ground states of the Cl2 and Brz molecules are calculated usmg pseudo-potent& techmques The agreement with experunent for both molecules IS sattiactory For Cl2 all-electron calcuhtlons are also performed as a study of the accuracy of the pseud
Two points about correlation potentials have been dealt with in this article. The first one is related to the shape of some of the most representative correlation potentials applied to the ground state of the He atom. It is shown here that both LDA and two-body density correlation potentials compare
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