Observation of Pattern Stabilization in a Driven Superfluid
The formation of patterns in driven systems has been studied extensively, and their emergence can be connected to a fine balance of instabilities and stabilization mechanisms. While the early phase of pattern formation can be understood on the basis of linear stability analyses, the longtime dynamic...
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-02-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.15.011026 |
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| author | Nikolas Liebster Marius Sparn Elinor Kath Jelte Duchene Keisuke Fujii Sarah L. Görlitz Tilman Enss Helmut Strobel Markus K. Oberthaler |
| author_facet | Nikolas Liebster Marius Sparn Elinor Kath Jelte Duchene Keisuke Fujii Sarah L. Görlitz Tilman Enss Helmut Strobel Markus K. Oberthaler |
| author_sort | Nikolas Liebster |
| collection | DOAJ |
| description | The formation of patterns in driven systems has been studied extensively, and their emergence can be connected to a fine balance of instabilities and stabilization mechanisms. While the early phase of pattern formation can be understood on the basis of linear stability analyses, the longtime dynamics can only be described by accounting for the interactions between the excitations generated by the drive. Here, we observe the stabilization of square patterns in an interaction-driven, two-dimensional Bose-Einstein condensate. These patterns emerge due to inherent high-order processes that become relevant in the regime of large phonon occupations. Theoretically, this can be understood as the emergence of a stable fixed point of coupled nonlinear amplitude equations, which include phonon-phonon interactions. We experimentally probe the predicted flows toward such a stable fixed point, as well as repulsion from a saddle fixed point, using the experimental control unique to quantum gases. |
| format | Article |
| id | doaj-art-0d38b166df9d4ba0afce63d10bae86c2 |
| institution | Kabale University |
| issn | 2160-3308 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj-art-0d38b166df9d4ba0afce63d10bae86c22025-02-07T15:06:02ZengAmerican Physical SocietyPhysical Review X2160-33082025-02-0115101102610.1103/PhysRevX.15.011026Observation of Pattern Stabilization in a Driven SuperfluidNikolas LiebsterMarius SparnElinor KathJelte DucheneKeisuke FujiiSarah L. GörlitzTilman EnssHelmut StrobelMarkus K. OberthalerThe formation of patterns in driven systems has been studied extensively, and their emergence can be connected to a fine balance of instabilities and stabilization mechanisms. While the early phase of pattern formation can be understood on the basis of linear stability analyses, the longtime dynamics can only be described by accounting for the interactions between the excitations generated by the drive. Here, we observe the stabilization of square patterns in an interaction-driven, two-dimensional Bose-Einstein condensate. These patterns emerge due to inherent high-order processes that become relevant in the regime of large phonon occupations. Theoretically, this can be understood as the emergence of a stable fixed point of coupled nonlinear amplitude equations, which include phonon-phonon interactions. We experimentally probe the predicted flows toward such a stable fixed point, as well as repulsion from a saddle fixed point, using the experimental control unique to quantum gases.http://doi.org/10.1103/PhysRevX.15.011026 |
| spellingShingle | Nikolas Liebster Marius Sparn Elinor Kath Jelte Duchene Keisuke Fujii Sarah L. Görlitz Tilman Enss Helmut Strobel Markus K. Oberthaler Observation of Pattern Stabilization in a Driven Superfluid Physical Review X |
| title | Observation of Pattern Stabilization in a Driven Superfluid |
| title_full | Observation of Pattern Stabilization in a Driven Superfluid |
| title_fullStr | Observation of Pattern Stabilization in a Driven Superfluid |
| title_full_unstemmed | Observation of Pattern Stabilization in a Driven Superfluid |
| title_short | Observation of Pattern Stabilization in a Driven Superfluid |
| title_sort | observation of pattern stabilization in a driven superfluid |
| url | http://doi.org/10.1103/PhysRevX.15.011026 |
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