Feshbach resonances with large background scattering length: interplay with open-channel resonances

Details Feshbach resonances with large background scattering length: interplay with open-channel resonances Feshbach resonances with large background scattering length: interplay with open-channel resonances

2004-02-10

arxiv.org/abs/cond-mat/0402278v2

Phys. Rev. A 70, 012701 (2004).

Physics

Condensed Matter

Other Condensed Matter

16 pages, 12 figures, accepted for publication in Phys. Rev. A; v2: added references

Scientific paper

10.1103/PhysRevA.70.012701

Feshbach resonances are commonly described by a single-resonance Feshbach model, and open-channel resonances are not taken into account explicitly. However, an open-channel resonance near threshold limits the range of validity of this model. Such a situation exists when the background scattering length is much larger than the range of the interatomic potential. The open-channel resonance introduces strong threshold effects not included in the single-resonance description. We derive an easy-to-use analytical model that takes into account both the Feshbach resonance and the open-channel resonance. We apply our model to $^{85}$Rb, which has a large background scattering length, and show that the agreement with coupled-channels calculations is excellent. The model can be readily applied to other atomic systems with a large background scattering length, such as $^6$Li and $^{133}$Cs. Our approach provides full insight into the underlying physics of the interplay between open-channel (or potential) resonances and Feshbach resonances.

Affiliated with

Also associated with

No associations

Rating

Feshbach resonances with large background scattering length: interplay with open-channel resonances does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Feshbach resonances with large background scattering length: interplay with open-channel resonances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feshbach resonances with large background scattering length: interplay with open-channel resonances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-167640