# Feshbach resonance in optical lattices and the quantum Ising model.

@article{Bhaseen2009FeshbachRI, title={Feshbach resonance in optical lattices and the quantum Ising model.}, author={M. J. Bhaseen and A. O. Silver and Martin Hohenadler and Benjamin D. Simons}, journal={Physical review letters}, year={2009}, volume={103 26}, pages={ 265302 } }

Motivated by experiments on heteronuclear Feshbach resonances in Bose mixtures, we investigate s-wave pairing of two species of bosons in an optical lattice. The zero temperature phase diagram supports a rich array of superfluid and Mott phases and a network of quantum critical points. This topology reveals an underlying structure that is succinctly captured by a two-component Landau theory. Within the second Mott lobe we establish a quantum phase transition described by the paradigmatic…

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