A new representation of the many body wave function and its application as a post Hartree-Fock energy variation method

TL;DR

This paper presents a novel representation of many-body electron wave functions that improves upon Hartree-Fock approximation, demonstrated through calculations of ground state energies.

Contribution

It introduces a new wave function representation that offers systematic improvements over traditional Hartree-Fock methods.

Findings

Better ground state energy estimates than Hartree-Fock

Systematic approach to wave function representation

Potential for improved accuracy in many-body calculations

Abstract

In this paper, we introduce a new representation of many body electron wave function and a few calculation results of the ground state energies of many body systems using that representation, which is systematically better than the Hartree-Fock approximation.