dorsal/arxiv
View SchemaVariational methods, multiprecision and nonrelativistic energies
| Authors | V. I. Korobov |
|---|---|
| Categories | |
| ArXiv ID | physics/9912052 |
| URL | https://arxiv.org/abs/physics/9912052 |
Abstract
It is known that the variational methods are the most powerful tool for studying the Coulomb three-body bound state problem. However, they often suffer from loss of stability when the number of basis functions increases. This problem can be cured by applying the multiprecision package designed by D.H. Bailey. We consider the variational basis functions of the type exp(-a_n r_1 - b_n r_2 - g_n r_12) with complex exponents. The method yields the best available energies for the ground states of the helium atom and the positive hydrogen ion as well as many other known atomic and molecular systems.
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"abstract": "It is known that the variational methods are the most powerful tool for\nstudying the Coulomb three-body bound state problem. However, they often suffer\nfrom loss of stability when the number of basis functions increases. This\nproblem can be cured by applying the multiprecision package designed by D.H.\nBailey. We consider the variational basis functions of the type exp(-a_n r_1 -\nb_n r_2 - g_n r_12) with complex exponents. The method yields the best\navailable energies for the ground states of the helium atom and the positive\nhydrogen ion as well as many other known atomic and molecular systems.",
"arxiv_id": "physics/9912052",
"authors": [
"V. I. Korobov"
],
"categories": [
"physics.atom-ph",
"physics.comp-ph"
],
"title": "Variational methods, multiprecision and nonrelativistic energies",
"url": "https://arxiv.org/abs/physics/9912052"
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