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Analyzing Feshbach resonances: a 6Li-133Cs case study

We provide a comprehensive comparison of a coupled channel calculation, the asymptotic bound-state model (ABM), and the multichannel quantum defect theory (MQDT). Quantitative results for 6Li−133Csare presented and compared to previously measured 6Li−133CsFeshbach resonances (FRs) [Repp et al., Phys...

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Bibliographic Details
Main Authors: Pires, Rico (Author) , Repp, Marc (Author) , Ulmanis, Juris (Author) , Kuhnle, Eva (Author) , Weidemüller, Matthias (Author)
Format: Article (Journal)
Language:English
Published: 30 July 2014
In: Physical review. A, Atomic, molecular, and optical physics
Year: 2014, Volume: 90, Issue: 1
ISSN:1094-1622
DOI:10.1103/PhysRevA.90.012710
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.90.012710
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.90.012710
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Author Notes:R. Pires, M. Repp, J. Ulmanis, E.D. Kuhnle, and M. Weidemüller, T.G. Tiecke, Chris H. Greene, Brandon P. Ruzic and John L. Bohn, E. Tiemann
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Summary:We provide a comprehensive comparison of a coupled channel calculation, the asymptotic bound-state model (ABM), and the multichannel quantum defect theory (MQDT). Quantitative results for 6Li−133Csare presented and compared to previously measured 6Li−133CsFeshbach resonances (FRs) [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 nondominant 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.
Item Description:Im Titelzusatz sind die Zahlen 6 und 133 hochgestellt
Gesehen am 29.07.2020
Physical Description:Online Resource
ISSN:1094-1622
DOI:10.1103/PhysRevA.90.012710

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