Corrections to the Nonrelativistic Ground Energy of a Helium Atom

@inproceedings{Duan2005CorrectionsTT,
  title={Corrections to the Nonrelativistic Ground Energy of a Helium Atom},
  author={Y. Duan and Yu-xiao Liu and Li-Jie Zhang},
  year={2005}
}
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%.