Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2009-03-14
Phys. Rev. A 80 (2009) 023620
Physics
Condensed Matter
Other Condensed Matter
5 pages, 2 figures
Scientific paper
10.1103/PhysRevA.80.023620
When a magnetic field is applied along a direction deviated from the quantization $Z$-axis, the conservation of total magnetization holds no more. In this case the inclined field can cause a strong spin-evolution via the linear Zeeman term even the field is as weak as a percentage of $mG$. An approach beyond the mean field theory is proposed to study the evolution of small $^{87}$Rb condensates under the weak inclined fields. The time-dependent populations of spin-components are given in analytical forms. The evolution is found to be highly sensitive to the magnitude and direction of the field.
Bao Cheng-guang
Chen Zhifeng
He Yanzhang
Li Zhibing
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