Applications of four-body exponentially correlated functions

TL;DR

This paper demonstrates the use of four-body exponentially correlated functions to accurately calculate relativistic effects and matrix elements involving negative powers of interparticle distances in lithium-like atoms.

Contribution

It introduces a novel application of four-body exponentially correlated functions for precise relativistic calculations in atomic physics.

Findings

Accurate calculations of relativistic effects in lithium-like atoms.

Results for matrix elements involving negative powers of interparticle distances.

Validation of four-body exponentially correlated functions for atomic calculations.

Abstract

We demonstrate the applicability of four-body exponentially correlated functions for the accurate calculations of relativistic effects in lithium-like atoms and present results for matrix elements of various operators which involve negative powers of interparticle distances.