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arXiv 1406.0477cond-mat.quant-gasphysics.atom-phquant-ph
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分析费什巴赫共振--$^6$ Li - $^{133}$ Cs的实例研究

Analyzing Feshbach resonances -- A $^6$Li -$^{133}$Cs case study

Rico Pires, Marc Repp, Juris Ulmanis, Eva D. Kuhnle, Matthias Weidemüller, Tobias G. Tiecke, Chris H. Greene, Brandon P. Ruzic, John L. Bohn, Eberhard Tiemann

摘要:

我们提供了一个全面的比较耦合通道计算,渐近束缚态模型(ABM),和多通道量子亏损理论(MQDT)。给出了$^6$ $^{133}$ Cs的定量结果,并与先前测量的$^6$ $^{133}$ Cs费什巴赫共振(FR)进行了比较[M. Repp等人,A 87 010701(R)(2013)]。我们演示了如何ABM的准确性可以逐步提高,包括磁偶极-偶极相互作用和耦合到一个非主导的虚拟状态。我们提出了一个MQDT计算,其中包括磁偶极-偶极和二阶自旋轨道相互作用。介绍了一种帧变换形式主义,它允许分配测量的FR只有三个参数。所有三个模型在观测到的FR上实现了< 1G的总均方根误差。我们批判性地比较不同的模型,鉴于准确性的描述FR和所需的输入参数的计算。

英文摘要:

We provide a comprehensive comparison of a coupled channels calculation, the asymptotic bound state model (ABM), and the multichannel quantum defect theory (MQDT). Quantitative results for $^6$Li -$^{133}$Cs are presented and compared to previously measured $^6$Li -$^{133}$Cs Feshbach resonances (FRs) [M. Repp et al., Phys. Rev. A 87 010701(R) (2013)]. We demonstrate how the accuracy of the ABM can be stepwise improved by including magnetic dipole-dipole interactions and coupling to a non-dominant virtual state. We present a MQDT calculation, where magnetic dipole-dipole and second order spin-orbit interactions are included. A frame transformation formalism is introduced, which allows the assignment of measured FRs with only three parameters. All three models achieve a total rms error of < 1G on the observed FRs. We critically compare the different models in view of the accuracy for the description of FRs and the required input parameters for the calculations.

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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