



@article {1283,
	title = {Avoided crossings between bound states of ultracold Cesium dimers},
	journal = {Physical Review A},
	volume = {78},
	year = {2008},
	month = {2008/11/5},
	abstract = {  We present an efficient new computational method for calculating the binding
energies of the bound states of ultracold alkali-metal dimers in the presence
of magnetic fields. The method is based on propagation of coupled differential
equations and does not use a basis set for the interatomic distance coordinate.
It is much more efficient than the previous method based on a radial basis set
and allows many more spin channels to be included. This is particularly
important in the vicinity of avoided crossings between bound states. We
characterize a number of different avoided crossings in Cs_2 and compare our
converged calculations with experimental results. Small but significant
discrepancies are observed in both crossing strengths and level positions,
especially for levels with l symmetry (rotational angular momentum L=8). The
discrepancies should allow the development of improved potential models in the
future.
},
	doi = {10.1103/PhysRevA.78.052703},
	url = {http://arxiv.org/abs/0806.2583v1},
	author = {Jeremy M. Hutson and Eite Tiesinga and Paul S. Julienne}
}
