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Corrections to the Nonrelativistic Ground Energy of a Helium Atom

Yi-Shi Duan·Yu-Xiao Liu·Li-Jie Zhang
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Abstract

Considering the nuclear motion, the authors give out the nonrelativistic ground energy of a helium atom by using a simple but effective variational wave function with a flexible parameter $k$. Based on this result, the relativistic and radiative corrections to the nonrelativistic Hamiltonian are discussed. The high precision value of the helium ground energy is evaluated to be -2.90338 a.u., and the relative error is 0.00034%.

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Yi-Shi Duan, Yu-Xiao Liu, Li-Jie Zhang. 2005-11-20. Corrections to the Nonrelativistic Ground Energy of a Helium Atom. https://doi.org/10.1088/0256-307x%2F21%2F9%2F010

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