Dynamics of Bose-Einstein condensates under anharmonic trap
The dynamics of weakly interacting three-dimensional Bose-Einstein condensates (BECs), trapped in external axially symmetric plus anharmonic distortion potential are studied. Within a variational approach and time-dependent Gross-Pitaevskii equation, the coupled condensate width equations are derive...
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| Format: | Article |
| Language: | English |
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Institute for Condensed Matter Physics
2022-06-01
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| Series: | Condensed Matter Physics |
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| Online Access: | https://doi.org/10.5488/CMP.25.23301 |
| _version_ | 1828823776430653440 |
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| author | H. Al-Jibbouri |
| author_facet | H. Al-Jibbouri |
| author_sort | H. Al-Jibbouri |
| collection | DOAJ |
| description | The dynamics of weakly interacting three-dimensional Bose-Einstein condensates (BECs), trapped in external axially symmetric plus anharmonic distortion potential are studied. Within a variational approach and time-dependent Gross-Pitaevskii equation, the coupled condensate width equations are derived. By modulating anharmonic distortion of the trapping potential, nonlinear features are studied numerically and illustrated analytically, such as mode coupling of oscillation modes, and resonances. Furthermore, the stability of attractive interaction BEC in both repulsive and attractive anharmonic distortion is examined. We demonstrate that a small repulsive and attractive anharmonic distortion is effective in reducing (extending) the condensate stability region since it decreases (increases) the critical number of atoms in the trapping potential. |
| first_indexed | 2024-12-12T13:41:57Z |
| format | Article |
| id | doaj.art-eb6de4b920ee43e48b13afe70acb7550 |
| institution | Directory Open Access Journal |
| issn | 1607-324X 2224-9079 |
| language | English |
| last_indexed | 2024-12-12T13:41:57Z |
| publishDate | 2022-06-01 |
| publisher | Institute for Condensed Matter Physics |
| record_format | Article |
| series | Condensed Matter Physics |
| spelling | doaj.art-eb6de4b920ee43e48b13afe70acb75502022-12-22T00:22:47ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2224-90792022-06-012522330110.5488/CMP.25.23301Dynamics of Bose-Einstein condensates under anharmonic trapH. Al-JibbouriThe dynamics of weakly interacting three-dimensional Bose-Einstein condensates (BECs), trapped in external axially symmetric plus anharmonic distortion potential are studied. Within a variational approach and time-dependent Gross-Pitaevskii equation, the coupled condensate width equations are derived. By modulating anharmonic distortion of the trapping potential, nonlinear features are studied numerically and illustrated analytically, such as mode coupling of oscillation modes, and resonances. Furthermore, the stability of attractive interaction BEC in both repulsive and attractive anharmonic distortion is examined. We demonstrate that a small repulsive and attractive anharmonic distortion is effective in reducing (extending) the condensate stability region since it decreases (increases) the critical number of atoms in the trapping potential.https://doi.org/10.5488/CMP.25.23301bose-einstein condensatesgross-pitaevskii equationanharmonic trap |
| spellingShingle | H. Al-Jibbouri Dynamics of Bose-Einstein condensates under anharmonic trap Condensed Matter Physics bose-einstein condensates gross-pitaevskii equation anharmonic trap |
| title | Dynamics of Bose-Einstein condensates under anharmonic trap |
| title_full | Dynamics of Bose-Einstein condensates under anharmonic trap |
| title_fullStr | Dynamics of Bose-Einstein condensates under anharmonic trap |
| title_full_unstemmed | Dynamics of Bose-Einstein condensates under anharmonic trap |
| title_short | Dynamics of Bose-Einstein condensates under anharmonic trap |
| title_sort | dynamics of bose einstein condensates under anharmonic trap |
| topic | bose-einstein condensates gross-pitaevskii equation anharmonic trap |
| url | https://doi.org/10.5488/CMP.25.23301 |
| work_keys_str_mv | AT haljibbouri dynamicsofboseeinsteincondensatesunderanharmonictrap |