| Autor: |
Matthew J. Davis, Tyler W. Neely, Ashton S. Bradley, David R. Scherer, Brian P. Anderson, Chad Weiler |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Quantum-Atom Optics Downunder. |
| Popis: |
We report on experiments and simulations of the growth of a Bose-Einstein condensate in which vortices are observed to form spontaneously in a non-rotating potential. Between 10% and 50% of experiments result in between one and three unambiguous vortex cores. We simulate a temperature quench of a Bose gas through the critical point using the stochastic Gross-Pitaevskii equation and find remarkable agreement with the experimental data. Faster cooling results in a higher probability of vortex formation, and we interpret these results in light of the Kibble-Zurek scenario for the formation of topological defects in continuous phase transitions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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