Analyzing Feshbach resonances: A [superscript 6]Li-[superscript 133]Cs case study
Name
PhysRevA.90.012710.pdf
Size
449.15 KB
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Checksum (MD5)
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Author(s)
Pires, R.
Repp, M.
Ulmanis, J.
Kuhnle, E. D.
Tiecke, T. G.
Greene, Chris H.
Ruzic, Brandon P.
Bohn, John L.
Tiemann, E.
Weidemuller, M.
Date Issued
July 2014
Journal
Physical Review A
Publisher
American Physical Society
Citation
Pires, R., et al. "Analyzing Feshbach resonances: A [superscript 6]Li-[superscript 133]Cs case study." Phys. Rev. A 90, 012710 (July 2014). © 2014 American Physical Society
Version
Final published version
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 [superscript 6]Li-[superscript 133]Cs are presented and compared to previously measured [superscript 6]Li-[superscript 133]Cs Feshbach 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevA.90.012710
