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。
---
英文标题:
《Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate》
---
作者:
A.T. Black, E. Gomez, L.D. Turner, S. Jung, P.D. Lett
---
最新提交年份:
2007
---
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
--
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
--
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
--
---
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.
---
PDF链接:
https://arxiv.org/pdf/704.0925