Considering the robustness and commonness, it uses the evolutionary algorithm to calculate the characteristic of H^- and He in outfield.The calculation for ground state energy of H^- and He can be converted to a problem of function optimization.At first the MCI method is adopted to deal with state wave functions of H^- and He, then the evolutionary algorithm calculates their ground state energies.Results show that it can obtain much more accurate results, and compared with other algorithms, it's more efficient.

The Modified Configuration Interaction method(MCI) is used to calculate the correlated energy of multi-electron systems.For obtaining the higher precision,it calls for huge computings.In order to handle this problem,which will cost much CPU time and memory room if only using one CPU to do it, the parallel multisection recurrence algorithm is adopted by using several CPUs to get the ground state energy of Helium atom at the same time.