



@article {1294,
	title = {Resonant control of polar molecules in an optical lattice},
	journal = {Physical Review A},
	volume = {85},
	year = {2012},
	month = {2012/2/8},
	abstract = {  We study the resonant control of two nonreactive polar molecules in an
optical lattice site, focussing on the example of RbCs. Collisional control can
be achieved by tuning bound states of the intermolecular dipolar potential, by
varying the applied electric field or trap frequency. We consider a wide range
of electric fields and trapping geometries, showing that a three-dimensional
optical lattice allows for significantly wider avoided crossings than free
space or quasi-two dimensional geometries. Furthermore, we find that dipolar
confinement induced resonances can be created with reasonable trapping
frequencies and electric fields, and have widths that will enable useful
control in forthcoming experiments.
},
	doi = {10.1103/PhysRevA.85.022703},
	url = {http://arxiv.org/abs/1111.0227v1},
	author = {Thomas M. Hanna and Eite Tiesinga and William F. Mitchell and Paul S. Julienne}
}
@article {1286,
	title = {Creation and manipulation of Feshbach resonances with radio-frequency  radiation
},
	journal = {New Journal of Physics},
	volume = {12},
	year = {2010},
	month = {2010/08/12},
	pages = {083031},
	abstract = {  We present a simple technique for studying collisions of ultracold atoms in
the presence of a magnetic field and radio-frequency radiation (rf). Resonant
control of scattering properties can be achieved by using rf to couple a
colliding pair of atoms to a bound state. We show, using the example of 6Li,
that in some ranges of rf frequency and magnetic field this can be done without
giving rise to losses. We also show that halo molecules of large spatial extent
require much less rf power than deeply bound states. Another way to exert
resonant control is with a set of rf-coupled bound states, linked to the
colliding pair through the molecular interactions that give rise to
magnetically tunable Feshbach resonances. This was recently demonstrated for
87Rb [Kaufman et al., Phys. Rev. A 80:050701(R), 2009]. We examine the
underlying atomic and molecular physics which made this possible. Lastly, we
consider the control that may be exerted over atomic collisions by placing
atoms in superpositions of Zeeman states, and suggest that it could be useful
where small changes in scattering length are required. We suggest other species
for which rf and magnetic field control could together provide a useful tuning
mechanism.
},
	doi = {10.1088/1367-2630/12/8/083031},
	url = {http://arxiv.org/abs/1004.0636v1},
	author = {Thomas M. Hanna and Eite Tiesinga and Paul S. Julienne}
}
@article {1285,
	title = {Prediction of Feshbach resonances from three input parameters},
	journal = {Physical Review A},
	volume = {79},
	year = {2009},
	month = {2009/4/30},
	abstract = {  We have developed a model of Feshbach resonances in gases of ultracold alkali
metal atoms using the ideas of multichannel quantum defect theory. Our model
requires just three parameters describing the interactions - the singlet and
triplet scattering lengths, and the long range van der Waals coefficient - in
addition to known atomic properties. Without using any further details of the
interactions, our approach can accurately predict the locations of resonances.
It can also be used to find the singlet and triplet scattering lengths from
measured resonance data. We apply our technique to $^{6}$Li--$^{40}$K and
$^{40}$K--$^{87}$Rb scattering, obtaining good agreement with experimental
results, and with the more computationally intensive coupled channels
technique.
},
	doi = {10.1103/PhysRevA.79.040701},
	url = {http://arxiv.org/abs/0903.0884v2},
	author = {Thomas M. Hanna and Eite Tiesinga and Paul S. Julienne}
}
