Superfluid Fraction in an Interacting Spatially Modulated Bose-Einstein Condensate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2023

Superfluid Fraction in an Interacting Spatially Modulated Bose-Einstein Condensate

Résumé

At zero temperature, a Galilean-invariant Bose fluid is expected to be fully superfluid. Here we investigate theoretically and experimentally the quenching of the superfluid density of a dilute Bose-Einstein condensate due to the breaking of translational (and thus Galilean) invariance by an external 1D periodic potential. Both Leggett's bound fixed by the knowledge of the total density and the anisotropy of the sound velocity provide a consistent determination of the superfluid fraction. The use of a large-period lattice emphasizes the important role of two-body interactions on superfluidity.
Fichier principal
Vignette du fichier
2023_Chauveau_PhysRevLett.130.226003.pdf (503.84 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04147592 , version 1 (30-06-2023)

Identifiants

Citer

G Chauveau, C Maury, F Rabec, C Heintze, G Brochier, et al.. Superfluid Fraction in an Interacting Spatially Modulated Bose-Einstein Condensate. Physical Review Letters, 2023, 130 (22), pp.226003. ⟨10.1103/physrevlett.130.226003⟩. ⟨hal-04147592⟩
23 Consultations
23 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More