Ring solitons and soliton sacks in imbalanced fermionic systems
Quantum Gases
2020-12-01 v2 Superconductivity
Pattern Formation and Solitons
Abstract
We show that in superfluids with fermionic imbalance and uniform ground state, there are stable solitons. These solutions are formed of radial density modulations resulting in nodal rings. We demonstrate that these solitons exhibit nontrivial soliton-soliton and soliton-vortex interactions and can form complicated bound states in the form of "soliton sacks". In a phase-modulating (Fulde-Ferrell) background, we find different solitonic states, in the form of stable vortex-antivortex pairs.
Cite
@article{arxiv.2005.03738,
title = {Ring solitons and soliton sacks in imbalanced fermionic systems},
author = {Mats Barkman and Albert Samoilenka and Thomas Winyard and Egor Babaev},
journal= {arXiv preprint arXiv:2005.03738},
year = {2020}
}
Comments
Version published in Physical Review Research