2021/05/31 by Matthew Edmonds
Physics and Astronomy · #Angular momentum #Anisotropy #Bose–Einstein condensate #Boson #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coupling (piping) #Mechanics #Physics #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #Superfluidity #Total angular momentum quantum number #Vortex #cond-mat.quant-gas #nlin.PS
paper · pdf · doi:10.1103/physreva.104.043310
published as Phys. Rev. A 104, 043310 (2021) · 15 pages, 8 figures
arxiv created 2021/09/30 · openalex publication_date 2021/10/14 · arxiv updated 2021/10/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Motivated by recent experiments, we study theoretically a gas of atomic bosons confined in an elliptical harmonic trap, forming a quasi-two-dimensional atomic Bose-Einstein condensate subject to a density-dependent gauge potential which realizes an effective density-angular-momentum coupling. We present exact Thomas-Fermi solutions which allow us to identify the stable regimes of the full parameter space of the model. Accompanying numerical simulations reveal the effect of the interplay of the rigid body and density-angular-momentum coupling for the elliptically confined condensate. By varying the strength of the gauge potential and trap anisotropy, we explore how the superfluid state emerges in different experimentally accessible geometries, while for large rotation strengths dense vortex lattices and concentric vortex ring arrangements are obtained.