States of fermionic atoms in an optical superlattice across a Feshbach resonance

Details States of fermionic atoms in an optical superlattice across a Feshbach resonance States of fermionic atoms in an optical superlattice across a Feshbach resonance

2006-07-19

arxiv.org/abs/cond-mat/0607464v1

Physics

Condensed Matter

Other Condensed Matter

10 pages, 11 figures

Scientific paper

10.1103/PhysRevA.74.052711

We investigate states of fermionic atoms across a broad Feshbach resonance in an optical superlattice which allows interaction only among a small number of lattice sites. The states are in general described by superpositions of atomic resonating valence bonds and dressed molecules. As one scans the magnetic field, level crossing is found between states with different symmetry properties, which may correspond to a quantum phase transition in the many-body case.

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