Understanding The Zhao-Parr Procedure and The Kramers-Henneberger States of Helium

Abstract

The first part of the work deals with the implementation of Zhao-Parr procedure to find Kohn-Sham orbitals(Ψ) from a given position space electron densities(ρ), which which a route to obtain momentum space densities(γ). An algorithm for the Zhao- Parr procedure is developed on the basis of Hartree-Fock algorithm. In the second part of the work, helium atom in an intense laser field is analyzed with help of the Kramers-Henneberger framework. The possibility of stabilizing KH state using low frequencies is proposed and being investigated.