Optical generation of quasisolitons in a single-component gas of neutral fermionic atoms

TL;DR

This paper investigates how phase imprinting can generate soliton-like excitations, called quasisolitons, in a non-interacting Fermi gas, highlighting the role of Fermi statistics and trapping conditions.

Contribution

It demonstrates the existence of quasisolitons in a non-interacting Fermi gas through numerical and analytical methods, a novel finding in quantum gas dynamics.

Findings

Quasisolitons can form in a non-interacting Fermi gas under specific conditions.

Fermi statistics and trapping are crucial for quasisoliton existence.

Both homogeneous and trapped gases support quasisoliton solutions.

Abstract

We analyze, the generation of soliton-like solutions in a single-component Fermi gas of neutral atoms at zero and finite temperatures with the phase imprinting method. By using both the numerical and analytical calculations, we find the conditions when the quasisolitons, which apparently resamble the properties of solitons in non-linear integrable equations, do exist in a non-interacting Fermi gas. We present the results for both spatially homogeneous and trapped cases, and emphasize the importance of the Fermi statistics and the absence of the interaction for the existence of such solutions.