Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances

@article{PhysRevA.79.013622,
  title = {Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances},
  author = {Lange, A. D. and Pilch, K. and Prantner, A. and Ferlaino, F. and Engeser, B. and N"agerl, H.-C. and Grimm, R. and Chin, C.},
  journal = {Phys. Rev. A},
  volume = {79},
  issue = {1},
  pages = {013622},
  numpages = {6},
  year = {2009},
  month = {Jan},
  abstract = {We present an analytic model to calculate the atomic scattering length near a Feshbach resonance from data on the molecular binding energy. Our approach considers finite-range square-well potentials and can be applied near broad, narrow, or even overlapping Feshbach resonances. We test our model on Cs2 Feshbach molecules. We measure the binding energy using magnetic-field modulation spectroscopy in a range where one broad and two narrow Feshbach resonances overlap. From the data we accurately determine the Cs atomic scattering length and the positions and widths of two particular resonances.},
  publisher = {American Physical Society},
  doi = {10.1103/PhysRevA.79.013622},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.79.013622},
  arXiv = {http://arxiv.org/abs/0810.5503}
}