Coherent spin mixing dynamics in thermal $^{87}$Rb spin-1 and spin-2 gases
Atomic and Molecular Clusters
2015-06-19 v1 Quantum Gases
Atomic Physics
Abstract
We study the non-equilibrium coherent spin mixing dynamics in ferromagnetic spin-1 and antiferromagnetic spin-2 thermal gases of ultracold Rb atoms. Long lasting spin population oscillations with magnetic field dependent resonances are observed in both cases. Our observations are well reproduced by Boltzmann equations of the Wigner distribution function. Compared to the equation of motion of spinor Bose-Einstein condensates, the only difference here is a factor of two increase in the spin-dependent interaction, which is confirmed directly in the spin-2 case by measuring the relation between the oscillation amplitude and the sample's density.
Keywords
Cite
@article{arxiv.1503.01171,
title = {Coherent spin mixing dynamics in thermal $^{87}$Rb spin-1 and spin-2 gases},
author = {Xiaodong He and Bing Zhu and Xiaoke Li and Fudong Wang and Zhifang Xu and Dajun Wang},
journal= {arXiv preprint arXiv:1503.01171},
year = {2015}
}
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