TY - JOUR
AU - R. Pires
AU - M. Repp
AU - J. Ulmanis
AU - E. Kuhnle
AU - M. Weidemüller
AU - T. Tiecke
AU - Chris Greene
AU - Brandon Ruzic
AU - John Bohn
AU - E. Tiemann
AB - 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 6 Li − 133 Cs are presented and compared to previously measured  6 Li − 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 < 1 G 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.
BT - Physical Review A
DA - 2014-07
DO - 10.1103/PhysRevA.90.012710
N2 - 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 6 Li − 133 Cs are presented and compared to previously measured  6 Li − 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 < 1 G 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.
PY - 2014
EP - 012710
T2 - Physical Review A
TI - Analyzing Feshbach resonances: A 6Li - 133 Cs case study
UR - http://link.aps.org/doi/10.1103/PhysRevA.90.012710
VL - 90
SN - 1050-2947
ER -