Szczegóły publikacji
Opis bibliograficzny
Merging and oscillations of dipolar Bose-Einstein-condensate droplets / Wojciech ORŁOWSKI, Bartłomiej SZAFRAN // Physical Review . A ; ISSN 2469-9926. — 2026 — vol. 114 iss. 3 art. no. 033316, s. 033316-1–033316-19. — Bibliogr. s. 033316-18–033316-19, Abstr. — Publikacja dostępna online od: 2026-09-11
Autorzy (2)
Dane bibliometryczne
| ID BaDAP | 170288 |
|---|---|
| Data dodania do BaDAP | 2026-09-29 |
| Tekst źródłowy | URL |
| DOI | 10.1103/km38-xwbz |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, A |
Abstract
We investigate the dynamics of Bose-Einstein-condensate droplets composed of 164Dy atoms formed in a double-well potential following removal of the interwell barrier. By solving the dipolar Gross-Pitaevskii equation, we determine phase diagrams of ground-state configurations as functions of the number of atoms confined in the double-well potential. For an interwell separation 2𝑑=3µm, we consider the relative dipolar-to-contact interaction strengths ɛ𝑑𝑑=1.4, 1.45, and 1.5. Symmetry-broken lowest-energy configurations are found for ɛ𝑑𝑑=1.5 and, over a reduced range of numbers of atoms, for ɛ𝑑𝑑=1.45, whereas no symmetry-broken states are found for ɛ𝑑𝑑=1.4 up to 𝑁=5×104. We analyze the subsequent time evolution after removal of the central barrier, revealing both droplet oscillations and merger events leading to the formation of larger droplets. The oscillations are driven by the external potential and by the repulsive tails of the in-plane component of the dipolar interaction. For the two-droplet states at ɛ𝑑𝑑=1.5 and 2𝑑=3µm, merging is found for 𝑁=8000 and 8800, whereas the droplets remain separated for the investigated cases with 𝑁≥9000. Increasing the initial separation to 2𝑑=5µm shifts the approximate upper number of atoms for merging to 𝑁≃1.65×104, demonstrating that the crossover is controlled by the competition between the postquench excess energy and the repulsive interdroplet barrier.
