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Coherent spin dynamics in spin-imbalanced ferromagnetic spinor condensates |
| Qiu Hai-Bo (邱海波)a b, Wu Li-Wei (武丽伟)b |
a School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China;
b School of Applied Science, Beijing University of Science and Technology, Beijing 100083, China |
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Abstract We study the coherent spin dynamics of a ferromagnetic spinor Bose-Einstein condensate (BEC) in its domain formation process with an arbitrary spin configuration. Through a simplified schematic view of the domain structure, a semiclassical theory that captures the essential dynamics of the system is presented, and the coherent spin mixing dynamics can be understood in terms of oscillation in the phase space diagram. Using the phase diagram analysis method, we identify new phases, including the π phase oscillation and the running phase for the spin-imbalanced ferromagnetic spinor BEC.
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Received: 30 April 2014
Revised: 16 July 2014
Accepted manuscript online:
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PACS:
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03.75.Gg
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(Entanglement and decoherence in Bose-Einstein condensates)
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68.35.Rh
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(Phase transitions and critical phenomena)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11104217), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2014JQ1022), and the Youth Foundation of XUPT, China (Grant No. ZL2013-36). |
Corresponding Authors:
Qiu Hai-Bo
E-mail: phyqiu@gmail.com
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Cite this article:
Qiu Hai-Bo (邱海波), Wu Li-Wei (武丽伟) Coherent spin dynamics in spin-imbalanced ferromagnetic spinor condensates 2015 Chin. Phys. B 24 010304
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