Accurate near-threshold model for ultracold KRb dimers from interisotope Feshbach spectroscopy
Other Condensed Matter
2009-11-13 v1
Abstract
We investigate magnetic Feshbach resonances in two different ultracold K-Rb mixtures. Information on the K(39)-Rb(87) isotopic pair is combined with novel and pre-existing observations of resonance patterns for K(40)-Rb(87). Interisotope resonance spectroscopy improves significantly our near-threshold model for scattering and bound-state calculations. Our analysis determines the number of bound states in singlet/triplet potentials and establishes precisely near threshold parameters for all K-Rb pairs of interest for experiments with both atoms and molecules. In addition, the model verifies the validity of the Born-Oppenheimer approximation at the present level of accuracy.
Keywords
Cite
@article{arxiv.0803.0651,
title = {Accurate near-threshold model for ultracold KRb dimers from interisotope Feshbach spectroscopy},
author = {A. Simoni and M. Zaccanti and C. D'Errico and M. Fattori and G. Roati and M. Inguscio and G. Modugno},
journal= {arXiv preprint arXiv:0803.0651},
year = {2009}
}
Comments
9 pages, 7 figures