Josephson Current Flowing in Cyclically Coupled Bose-Einstein Condensates : Condensed Matter: Structure, etc.
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概要
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The Josephson effect in cyclically coupled Bose-Einstein condensates is studied theoretically. We analyze the simultaneous Gross-Pitaevskii equations with coupling terms between adjacent condensates. Depending on the initial relative phases between condensates, Josephson current flows cyclically to create a quantized vortex. Reducing the coupling between condensates changes the motion from periodic to chaotic, thus suppressing the cyclic current. The relation to the Kibble-Zurek mechanism is discussed; the density of the generated vortices is less than that predicted by this mechanism.
- 社団法人日本物理学会の論文
- 2000-07-15
著者
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Kasamatsu Kenichi
Department Of Physics Osaka City University
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Kasamatsu Kenichi
Department Of Chemistry Faculty Of Science Shimane University
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Tsubota Makoto
Department Of Cardiovascular Surgery Ishikawa Prefectural Central Hospital
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Tsubota Makoto
Department Of Agricultural Engineering Kochi University
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