Interisotope determination of ultracold rubidium interactions from three high-precision experiments.
Combining the measured binding energies of four of the most weakly bound rovibrational levels of the 87Rb2 molecule with results of two other recent high-precision experiments, we obtain exceptionally strong constraints on the atomic interaction parameters in a highly model independent analysis. The comparison of (85)Rb and (87)Rb data, where the two isotopes are related by a mass scaling procedure, plays a crucial role. We predict scattering lengths, clock shifts, and Feshbach resonances with an unprecedented level of accuracy. Two of the Feshbach resonances occur at easily accessible magnetic fields in mixed-spin channels. One is related to a d-wave shape resonance.
van Kempen
E G M
EG
Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
Kokkelmans
S J J M F
SJ
Heinzen
D J
DJ
Verhaar
B J
BJ