A Bose-Einstein condensate in a random potential
| Autor: | Michele Modugno, Massimo Inguscio, Diederik S. Wiersma, Leonardo Fallani, Chiara Fort, J. E. Lye |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Random potential Condensed matter physics Condensed Matter::Other General Physics and Astronomy FOS: Physical sciences Trapping Condensed Matter::Disordered Systems and Neural Networks Uncorrelated law.invention Condensed Matter - Other Condensed Matter Speckle pattern Dipole law Quantum electrodynamics Quadrupole Randomness Bose–Einstein condensate Other Condensed Matter (cond-mat.other) |
| Popis: | An optical speckle potential is used to investigate the static and dynamic properties of a Bose-Einstein condensate in the presence of disorder. For strong disorder the condensate is localized in the deep wells of the potential. With smaller levels of disorder, stripes are observed in the expanded density profile and strong damping of dipole and quadrupole oscillations is seen. Uncorrelated frequency shifts of the two modes are measured for a weak disorder and are explained using a sum-rules approach and by the numerical solution of the Gross-Pitaevskii equation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|