On the question of radiative losses in the frame of density matrix formalism in free space

TL;DR

This paper critically examines the common harmonic oscillator model for radiative losses in quantum systems and argues that replacing it with density matrix equations does not resolve the fundamental issues.

Contribution

It demonstrates that the traditional harmonic oscillator approach is fundamentally flawed for radiative losses and that a direct substitution with density matrix formalism is insufficient.

Findings

Harmonic oscillator model is inadequate for radiative losses

Direct substitution with density matrix equations does not fix the model's issues

Highlights need for alternative approaches to quantum radiative loss modeling

Abstract

The problem of radiative losses is usually considered using harmonic oscillator model for quantum dynamics. It is shown that this evidently wrong approach nevertheless cannot be straightforwardly improved by direct substitution of the harmonic oscillator by density matrix equations.