Spatial instabilities in a cloud of cold atoms
| Autor: | Philippe Verkerk, Daniel Hennequin, Antoine Jallageas, Rudy Romain |
|---|---|
| Přispěvatelé: | Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Fonds Européen de Développement Economique Régional, ANR-11-LABX-0007,CEMPI,Centre Européen pour les Mathématiques, la Physique et leurs Interactions(2011) |
| Rok vydání: | 2016 |
| Předmět: |
Physics
[PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] Spacetime Atomic Physics (physics.atom-ph) business.industry Dynamics (mechanics) FOS: Physical sciences Spectral domain Cloud computing Plasma 37.10.Gh 05.45.-a 37.10.Vz 52.35.-g 01 natural sciences Physics - Plasma Physics Physics - Atomic Physics Separable space Plasma Physics (physics.plasm-ph) 010309 optics [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] 0103 physical sciences Principal component analysis Statistical physics 010306 general physics Spatial domain business |
| Zdroj: | Physical Review E. 94 |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/physreve.94.052212 |
| Popis: | Cold atomic clouds have been shown to have some similarities with plasmas. Previous studies showed that such clouds exhibit instabilities induced by long-range interactions. However, they did not describe the spatial properties of the dynamics. In this paper, we study experimentally the spatial nature of stochastic instabilities, and we find out that the dynamics is localized. Data are analyzed both in the spectral domain and in the spatial domain (principal component analysis). Both methods fail to describe the dynamics in terms of eigenmodes, showing that space and time are not separable. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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