



@article {1279,
	title = {Anisotropy induced Feshbach resonances in a quantum dipolar gas of  magnetic atoms
},
	journal = {Physical Review Letters},
	volume = {109},
	year = {2012},
	month = {2012/9/7},
	abstract = {  We explore the anisotropic nature of Feshbach resonances in the collision
between ultracold magnetic submerged-shell dysprosium atoms, which can only
occur due to couplings to rotating bound states. This is in contrast to
well-studied alkali-metal atom collisions, where most Feshbach resonances are
hyperfine induced and due to rotation-less bound states. Our novel
first-principle coupled-channel calculation of the collisions between
open-4f-shell spin-polarized bosonic dysprosium reveals a striking correlation
between the anisotropy due to magnetic dipole-dipole and electrostatic
interactions and the Feshbach spectrum as a function of an external magnetic
field. Over a 20 mT magnetic field range we predict about a dozen Feshbach
resonances and show that the resonance locations are exquisitely sensitive to
the dysprosium isotope.
},
	doi = {10.1103/PhysRevLett.109.103002},
	url = {http://arxiv.org/abs/1203.4172v1},
	author = {Alexander Petrov and Eite Tiesinga and Svetlana Kotochigova}
}
