Bose-Einstein condensate in an elliptical waveguide
Anno: 2022
Autori: Salasnich., L.
Affiliazione autori: Univ Padua, Dipartimento Fis & Astron G Galilei, Via F Marzolo 8, I-35131 Padua, Italy; Univ Padua, QTech, Via F Marzolo 8, I-35131 Padua, Italy; Ist Nazl Fis Nucl, Sez Padova, Via Marzolo 8, I-35131 Padua, Italy; Ist Nazl Ottica, Consiglio Nazl Ric, Unità Sesto Fiorentino, Via Nello Carrara 2, I-50019 Sesto Fiorentino, Italy.
Abstract: We investigate the effects of spatial curvature for an atomic Bose-Einstein condensate confined in an elliptical waveguide. The system is well described by an effective 1D Gross-Pitaevskii equation with a quantum-curvature potential, which has the shape of a double-well but crucially depends on the eccentricity of the ellipse. The ground state of the system displays a quantum phase transition from a two-peak configuration to a one-peak configuration at a critical attractive interaction strength. In correspondence of this phase transition the superfluid fraction strongly reduces and goes to zero for a sufficiently attractive Bose-Bose interaction.
Giornale/Rivista: SCIPOST PHYSICS CORE
Volume: 5 (1) Da Pagina: 15-1 A: 15-11
Parole chiavi: Bound-states; QuantumDOI: 10.21468/SciPostPhysCore.5.1.015Citazioni: 7dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-29Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
