The cross-over from Townes solitons to droplets in a 2D Bose mixture - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue New Journal of Physics Année : 2023

The cross-over from Townes solitons to droplets in a 2D Bose mixture

Résumé

When two Bose-Einstein condensates-labelled 1 and 2-overlap spatially, the equilibrium state of the system depends on the miscibility criterion for the two fluids. Here, we theoretically focus on the non-miscible regime in two spatial dimensions and explore the properties of the localized wave packet formed by the minority component 2 when immersed in an infinite bath formed by component 1. We address the zero-temperature regime and describe the two-fluid system by coupled classical field equations. We show that such a wave packet exists only for an atom number N 2 above a threshold value corresponding to the Townes soliton state. We identify the regimes where this localized state can be described by an effective single-field equation up to the droplet case, where component 2 behaves like an incompressible fluid. We study the near-equilibrium dynamics of the coupled fluids, which reveals specific parameter ranges for the existence of localized excitation modes.
Fichier principal
Vignette du fichier
2023_Bakkali_NJP_25_1_013007.pdf (986.03 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04147597 , version 1 (30-06-2023)

Identifiants

Citer

B Bakkali-Hassani, C Maury, S Stringari, S Nascimbene, J Dalibard, et al.. The cross-over from Townes solitons to droplets in a 2D Bose mixture. New Journal of Physics, 2023, 25, pp.013007. ⟨10.1088/1367-2630/acaee3⟩. ⟨hal-04147597⟩
74 Consultations
14 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More