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摘要翻译：
我们观察到反铁磁自旋为1的钠玻色-爱因斯坦凝聚体中的相干自旋振荡。自旋振荡随磁场的变化表现出明显的非线性特征，这与理论一致，并预测了临界磁场附近的非谐振现象。磁相图的测量结果与单一空间模式下的预测结果一致。振荡周期得到了钠自旋相关相互作用系数的最佳测量结果，确定了钠自旋相关S波散射长度$a_{f=2}-a_{f=0}$之间的差值为$2.47\pm0.27$Bohr半径。
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英文标题：
《Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate》
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作者：
A.T. Black, E. Gomez, L.D. Turner, S. Jung, P.D. Lett
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Other Condensed Matter 其他凝聚态物质
分类描述：Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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一级分类：Physics 物理学
二级分类：Soft Condensed Matter 软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
We observe coherent spin oscillations in an antiferromagnetic spin-1 Bose-Einstein condensate of sodium. The variation of the spin oscillations with magnetic field shows a clear signature of nonlinearity, in agreement with theory, which also predicts anharmonic oscillations near a critical magnetic field. Measurements of the magnetic phase diagram agree with predictions made in the approximation of a single spatial mode. The oscillation period yields the best measurement to date of the sodium spin-dependent interaction coefficient, determining that the difference between the sodium spin-dependent s-wave scattering lengths $a_{f=2}-a_{f=0}$ is $2.47\pm0.27$ Bohr radii.
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PDF链接：
https://arxiv.org/pdf/704.0925
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