English

On the Occurrence of a Phase Transition in Atomic Systems

General Physics 2024-03-22 v1

Abstract

We present a simple argument confirming the spontaneous quantum condensation of an electromagnetic field in matter in the case of a multi-level atomic system coupled to a single-mode electromagnetic field in the dipole approximation. The obtained result disproves the validity of a ``no-go theorem'' and fully rehabilitates theories of spontaneous quantum condensation of the electromagnetic field in matter. Peculiar features of the identified coherent states are outlined.

Keywords

Cite

@article{arxiv.2403.13854,
  title  = {On the Occurrence of a Phase Transition in Atomic Systems},
  author = {Luca Gamberale and Daniele Garbelli},
  journal= {arXiv preprint arXiv:2403.13854},
  year   = {2024}
}