dorsal/arxiv
View SchemaThe two electron molecular bond revisited: from Bohr orbits to two-center orbitals
| Authors | Goong Chen, Siu A. Chin, Yusheng Dou, Kishore T. Kapale, Moochan Kim, Anatoly A. Svidzinsky, Kerim Urtekin, Han Xiong, Marlan O. Scully |
|---|---|
| Categories | |
| ArXiv ID | physics/0508177 |
| URL | https://arxiv.org/abs/physics/0508177 |
| Journal | Advances in Atomic, Molecular and Optical Physics, v. 51, Edited by H.H. Stroke, Elsevier (2005), pp. 93-238. |
Abstract
In this review we first discuss extension of Bohr's 1913 molecular model and show that it corresponds to the large-D limit of a dimensional scaling (D-scaling) analysis, as developed by Herschbach and coworkers. In a separate but synergetic approach to the two-electron problem, we summarize recent advances in constructing analytical models for describing the two-electron bond. The emphasis here is not maximally attainable numerical accuracy, but beyond textbook accuracy as informed by physical insights. We demonstrate how the interplay of the cusp condition, the asymptotic condition, the electron-correlation, configuration interaction, and the exact one electron two-center orbitals, can produce energy results approaching chemical accuracy. Reviews of more traditional calculational approaches, such as Hartree-Fock, are also given. The inclusion of electron correlation via Hylleraas type functions is well known to be important, but difficult to implement for more than two electrons. The use of the D-scaled Bohr model offers the tantalizing possibility of obtaining electron correlation energy in a non-traditional way.
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"abstract": "In this review we first discuss extension of Bohr\u0027s 1913 molecular model and\nshow that it corresponds to the large-D limit of a dimensional scaling\n(D-scaling) analysis, as developed by Herschbach and coworkers.\n In a separate but synergetic approach to the two-electron problem, we\nsummarize recent advances in constructing analytical models for describing the\ntwo-electron bond. The emphasis here is not maximally attainable numerical\naccuracy, but beyond textbook accuracy as informed by physical insights. We\ndemonstrate how the interplay of the cusp condition, the asymptotic condition,\nthe electron-correlation, configuration interaction, and the exact one electron\ntwo-center orbitals, can produce energy results approaching chemical accuracy.\nReviews of more traditional calculational approaches, such as Hartree-Fock, are\nalso given.\n The inclusion of electron correlation via Hylleraas type functions is well\nknown to be important, but difficult to implement for more than two electrons.\nThe use of the D-scaled Bohr model offers the tantalizing possibility of\nobtaining electron correlation energy in a non-traditional way.",
"arxiv_id": "physics/0508177",
"authors": [
"Goong Chen",
"Siu A. Chin",
"Yusheng Dou",
"Kishore T. Kapale",
"Moochan Kim",
"Anatoly A. Svidzinsky",
"Kerim Urtekin",
"Han Xiong",
"Marlan O. Scully"
],
"categories": [
"physics.chem-ph"
],
"journal_ref": "Advances in Atomic, Molecular and Optical Physics, v. 51, Edited\n by H.H. Stroke, Elsevier (2005), pp. 93-238.",
"title": "The two electron molecular bond revisited: from Bohr orbits to two-center orbitals",
"url": "https://arxiv.org/abs/physics/0508177"
},
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