Analyzing Feshbach resonances

• Verfasst von: Pires, Rico Jean-André Agnelo [VerfasserIn]
• Verfasst von: Repp, Marc [VerfasserIn]
• Verfasst von: Ulmanis, Juris [VerfasserIn]
• Verfasst von: Kuhnle, Eva [VerfasserIn]
• Verfasst von: Weidemüller, Matthias [VerfasserIn]
• Titel: Analyzing Feshbach resonances
• Titelzusatz: a 6Li-133Cs case study
• Verf.angabe: 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
• E-Jahr: 2014
• Jahr: 30 July 2014
• Umfang: 14 S.
• Fussnoten: Im Titelzusatz sind die Zahlen 6 und 133 hochgestellt ; Gesehen am 29.07.2020
• Titel Quelle: Enthalten in: Physical review / A
• Ort Quelle: College Park, Md., 1970
• Jahr Quelle: 2014
• Band/Heft Quelle: 90(2014,1) Artikel-Nummer 012710, 14 Seiten
• ISSN Quelle: 1094-1622
• DOI: doi:10.1103/PhysRevA.90.012710
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1725856069

Abstract

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.