Report
Collisionally inhomogeneous Bose-Einstein condensates with a linear interaction gradient
| العنوان: | Collisionally inhomogeneous Bose-Einstein condensates with a linear interaction gradient |
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| المؤلفون: | Di Carli, Andrea, Henderson, Grant, Flannigan, Stuart, Colquhoun, Craig D., Mitchell, Matthew, Oppo, Gian-Luca, Daley, Andrew J., Kuhr, Stefan, Haller, Elmar |
| المصدر: | Phys. Rev. Lett. 125, 183602 (2020) |
| سنة النشر: | 2019 |
| المجموعة: | Condensed Matter Quantum Physics |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases, Quantum Physics |
| الوصف: | We study the evolution of a collisionally inhomogeneous matter wave in a spatial gradient of the interaction strength. Starting with a Bose-Einstein condensate with weak repulsive interactions in quasi-one-dimensional geometry, we monitor the evolution of a matter wave that simultaneously extends into spatial regions with attractive and repulsive interactions. We observe the formation and the decay of soliton-like density peaks, counter-propagating self-interfering wave packets, and the creation of cascades of solitons. The matter-wave dynamics is well reproduced in numerical simulations based on the nonpolynomial Schroedinger equation with three-body loss, allowing us to better understand the underlying behaviour based on a wavelet transformation. Our analysis provides new understanding of collapse processes for solitons, and opens interesting connections to other nonlinear instabilities. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.125.183602 |
| URL الوصول: | http://arxiv.org/abs/1908.10021 |
| رقم الانضمام: | edsarx.1908.10021 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.125.183602 |
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