Amovilli, Howard and March model Hamiltonian is here extended to an arbitrary interparticle interaction strength. The model remains analytically solvable and the ground state wavefunction with a given, variationally determined, choice of parameters provides an approximate two-electron correlated s-wave function. Results are given for the series of nuclear charges between Z= 1 and 10. More than 60 % of s-wave correlation energy is recovered.
Approaching the s-wave model ground state energy of He-like atomic ions: results from a model Hamiltonian
AMOVILLI, CLAUDIO;
2016-01-01
Abstract
Amovilli, Howard and March model Hamiltonian is here extended to an arbitrary interparticle interaction strength. The model remains analytically solvable and the ground state wavefunction with a given, variationally determined, choice of parameters provides an approximate two-electron correlated s-wave function. Results are given for the series of nuclear charges between Z= 1 and 10. More than 60 % of s-wave correlation energy is recovered.File in questo prodotto:
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10.1007_s10910-016-0647-2.pdf
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