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Recently Deng Conghao et al. proposed a new method for the direct solution of the many-body Schrdinger equation. Calculations based on this method for the ground-state energy of He indicated that the convergence of the hyperspherical harmonics (HH) expansion is slow and not satisfactory. A ground-state energy of-2.90328 a.u. was obtained in Ref.[2] with 361 HH and 4 GLF. In order to accel
Recently Deng Conghao et al. Proposed a new method for the direct solution of the many-body Schrdinger equation. Calculations based on this method for the ground-state energy of He indicated that the convergence of the hyperspherical harmonics (HH) expansion is slow and not satisfactory. A ground-state energy of-2.90328 au was obtained in Ref. [2] with 361 HH and 4 GLF. In order to accel