Multiconfigurational time-dependent Hartree-Fock calculations for photoionization of one-dimensional Helium

TL;DR

This paper develops and applies multiconfigurational time-dependent Hartree-Fock methods to a one-dimensional Helium model, providing insights into its ground state, density, and absorption spectrum, and validating results against direct Schrödinger solutions.

Contribution

It introduces a multiconfigurational time-dependent Hartree-Fock approach for a 1D Helium model and compares its results with direct Schrödinger equation solutions.

Findings

Ground state energy matches direct solutions

Absorption spectrum is accurately reproduced

Two-particle density results are consistent with expectations

Abstract

The multiconfigurational time-dependent Hartree-Fock equations are discussed and solved for a one-dimensional model of the Helium atom. Results for the ground state energy and two-particle density as well as the absorption spectrum are presented and compared to direct solutions of the time-dependent Schroedinger equation.