CCAST, World Lab, Beijing 100080, Peoples R China
; Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany
; Inst High Energy Phys, Beijing 100039, Peoples R China
For a helium atom in D dimensions, the lowest energies of S wave with spin 1 and 0 are precisely calculated directly from the Schrodinger equation where the mass of the helium nucleus is finite. Our numerical results are a confirmation of the interdimensional degeneracy between the state S-1, (S-3(e)) in D dimensions and the state (3)Pe (P-1(e)) in D - 2 dimensions, where D greater than or equal to 5. (C) 2003 Elsevier Science B.V. All rights reserved.