𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A fast convergent hyperspherical expansion for the helium ground state

✍ Scribed by M.I. Haftel; V.B. Mandelzweig


Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
361 KB
Volume
120
Category
Article
ISSN
0375-9601

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Effect of different subsets on convergen
✍ Yi-Xuan Wang; Yu-Xiang Bu; Cong-Hao Deng πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 150 KB πŸ‘ 1 views

## Effects of different subsets on convergence patterns of hyperspherical Ε½ . 1 3 harmonic HH expansions for the low-lying S and S states of the helium atom have been investigated with the correlation-function-hyperspherical-harmonic-generalized-Ε½ . Laguerre-function CFHHGLF method by successively

A Convergent Renormalized Strong Couplin
✍ Ernst Joachim Weniger πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 886 KB

The Rayleigh Schro dinger perturbation series for the energy eigenvalue of an anharmonic oscillator defined by the Hamiltonian H (m) (;)=p^2 +x^2+;x^2 m with m=2, 3, 4, .. . diverges quite strongly for every ;{0 and has to summed to produce numerically useful results. However, a divergent weak coupl

A nonlinear programming approach to lowe
✍ I. Porras; D. Matthew Feldmann; Frederick W. King πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 170 KB πŸ‘ 3 views

Lower-bound estimates for the ground-state energy of the helium atom are determined using nonlinear programming techniques. Optimized lower bounds are determined for single-particle, radially correlated, and general correlated wave functions. The local nature of the method employed makes it a very s

A hybrid fast converging series expansio
✍ Hendrik Rogier πŸ“‚ Article πŸ“… 2005 πŸ› John Wiley and Sons 🌐 English βš– 162 KB

## Abstract A new formalism combining modal expansions based on perfectly matched layers (PMLs) and on Floquet modes is proposed to derive a fast‐converging series expansion for the 2D Green's function of layered media. The PML‐based modal expansion is obtained by terminating the waveguide, formed

A very accurate grid method for the solu
✍ F. T. Newman πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 188 KB πŸ‘ 1 views

An extension to the theory of Schrodinger equations has been made αΊ…hich enables the derivation of eigenvalues from a consideration of a very small part of geometric space. The concomitant unwanted continuum effects have been removed. The theory enables very convergent or ''superconvergent'' calculat