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Near-exact non-relativistic ionization energies for many-electron atoms
(The Royal Society, 2022-03-23)
Electron–electron interactions and correlations form the basis of difficulties encountered in the theoretical solution of problems dealing with multi-electron systems. Accurate treatment of the electron–electron problem ...
Parameter-free Separable Lowest-order Non-relativistic Hamiltonian for Helium Atom
(arXiv preprint arXiv, 2018-04-25)
Electron-electron correlation forms the basis of difficulties encountered in many-body physics.
Accurate treatment of the correlation problem is likely to unravel some nice physical properties of
matter embedded in the ...
Multipole expansion of integral powers of cosine theta
(2020-11)
Legendre polynomials form the basis for multipole expansion of spatially varying functions. The technique allows for decomposition of the function into two separate parts with one depending on the radial coordinates only ...