Bose-Einstein condensate in an elliptical waveguide
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...
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| Format: | Article |
| Language: | English |
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SciPost
2022-03-01
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| Series: | SciPost Physics Core |
| Online Access: | https://scipost.org/SciPostPhysCore.5.1.015 |
| _version_ | 1818773603015983104 |
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| author | Luca Salasnich |
| author_facet | Luca Salasnich |
| author_sort | Luca Salasnich |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-18T10:27:52Z |
| format | Article |
| id | doaj.art-112b6e8f3a9e44a39babf72f7de48bdf |
| institution | Directory Open Access Journal |
| issn | 2666-9366 |
| language | English |
| last_indexed | 2024-12-18T10:27:52Z |
| publishDate | 2022-03-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics Core |
| spelling | doaj.art-112b6e8f3a9e44a39babf72f7de48bdf2022-12-21T21:10:57ZengSciPostSciPost Physics Core2666-93662022-03-015101510.21468/SciPostPhysCore.5.1.015Bose-Einstein condensate in an elliptical waveguideLuca SalasnichWe 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.https://scipost.org/SciPostPhysCore.5.1.015 |
| spellingShingle | Luca Salasnich Bose-Einstein condensate in an elliptical waveguide SciPost Physics Core |
| title | Bose-Einstein condensate in an elliptical waveguide |
| title_full | Bose-Einstein condensate in an elliptical waveguide |
| title_fullStr | Bose-Einstein condensate in an elliptical waveguide |
| title_full_unstemmed | Bose-Einstein condensate in an elliptical waveguide |
| title_short | Bose-Einstein condensate in an elliptical waveguide |
| title_sort | bose einstein condensate in an elliptical waveguide |
| url | https://scipost.org/SciPostPhysCore.5.1.015 |
| work_keys_str_mv | AT lucasalasnich boseeinsteincondensateinanellipticalwaveguide |