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arXiv 1104.0890cond-mat.quant-gascond-mat.stat-mechphysics.atom-phquant-ph
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相互作用对囚禁玻色气体临界温度的影响

Effects of Interactions on the Critical Temperature of a Trapped Bose Gas

Robert P. Smith, Robert L. D. Campbell, Naaman Tammuz, Zoran Hadzibabic

摘要:

我们进行高精度测量的谐波捕获原子玻色气体的冷凝温度与广泛可调的相互作用。对于弱相互作用,我们观察到的临界温度与平均场论非常一致的负位移。然而,对于足够强的强相互作用,我们清楚地观察到一个额外的积极的转变,超越平均场临界相关的特点。我们还讨论了非平衡效应的表观临界温度非常弱和非常强相互作用。

英文摘要:

We perform high-precision measurements of the condensation temperature of a harmonically-trapped atomic Bose gas with widely-tuneable interactions. For weak interactions we observe a negative shift of the critical temperature in excellent agreement with mean-field theory. However for sufficiently strong interactions we clearly observe an additional positive shift, characteristic of beyond-mean-field critical correlations. We also discuss non-equilibrium effects on the apparent critical temperature for both very weak and very strong interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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