Report
Characteristics of Two-Dimensional Quantum Turbulence in a Compressible Superfluid
| العنوان: | Characteristics of Two-Dimensional Quantum Turbulence in a Compressible Superfluid |
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| المؤلفون: | Neely, T. W., Bradley, A. S., Samson, E. C., Rooney, S. J., Wright, E. M., Law, K. J. H., Carretero-González, R., Kevrekidis, P. G., Davis, M. J., Anderson, B. P. |
| المصدر: | Phys. Rev. Lett. 111, 235301 (2013) |
| سنة النشر: | 2012 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases |
| الوصف: | Under suitable forcing a fluid exhibits turbulence, with characteristics strongly affected by the fluid's confining geometry. Here we study two-dimensional quantum turbulence in a highly oblate Bose-Einstein condensate in an annular trap. As a compressible quantum fluid, this system affords a rich phenomenology, allowing coupling between vortex and acoustic energy. Small-scale stirring generates an experimentally observed disordered vortex distribution that evolves into large-scale flow in the form of a persistent current. Numerical simulation of the experiment reveals additional characteristics of two-dimensional quantum turbulence: spontaneous clustering of same-circulation vortices, and an incompressible energy spectrum with $k^{-5/3}$ dependence for low wavenumbers $k$ and $k^{-3}$ dependence for high $k$. Comment: 7 pages, 7 figures. Reference [29] updated for v2 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.111.235301 |
| URL الوصول: | http://arxiv.org/abs/1204.1102 |
| رقم الانضمام: | edsarx.1204.1102 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.111.235301 |
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