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Magnetization Plateaus for Spin-One Bosons in Optical Lattices: Stern-Gerlach Experiments with Strongly Correlated Atoms
(American Physical Society (APS), 2004)
We consider insulating states of spin-one bosons in optical lattices in the presence of a weak magnetic field. For the states with more than one atom per lattice site we find a series of quantum phase transitions between ...
Breakdown of the local density approximation in interacting systems of cold fermions in strongly anisotropic traps
(American Physical Society (APS), 2006)
We consider spin-polarized mixtures of cold fermionic atoms on the BEC side of the Feshbach resonance. We demonstrate that a strongly anisotropic confining potential can give rise to a double-peak structure in the axial ...
Spin-exchange interactions of spin-one bosons in optical lattices: Singlet, nematic, and dimerized phases
(American Physical Society (APS), 2003)
We consider insulating phases of cold spin-1 bosonic particles with antiferromagnetic interactions, such as 23Na, in optical lattices. We show that spin-exchange interactions give rise to several distinct phases, which ...