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physics.atom-ph2005★ 1 cited
The constrained-search--variational method: application to the ground state of Helium atom
Xiao-Yin Pan, Viraht Sahni, Lou Massa
n a recent paper we proposed the expansion of the space of variations in energy calculations by considering the approximate wave function to be a functional of functions $χ: ψ=…
physics.atom-ph2003★ 1 cited
On the Hylleraas Coordinates
Xiao-Yin Pan, Viraht Sahni, Lou Massa
The Hylleraas coordinates , , are the natural coordinates for the determination of properties of the Helium atom, the po…