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- W2045490055 abstract "In the fermionic Hubbard model, doubly occupied states have an exponentially large lifetime for strong repulsive interactions $U$. We show that this property can be used to prepare a metastable $s$-wave superfluid state for fermionic atoms in optical lattices described by a large-$U$ Hubbard model. When an initial band-insulating state is expanded, the doubly occupied sites Bose condense. A mapping to the ferromagnetic Heisenberg model in an external field allows for a reliable solution of the problem. Nearest-neighbor repulsion and pair hopping are important in stabilizing superfluidity." @default.
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- W2045490055 date "2008-12-29" @default.
- W2045490055 modified "2023-09-23" @default.
- W2045490055 title "Metastable Superfluidity of Repulsive Fermionic Atoms in Optical Lattices" @default.
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- W2045490055 doi "https://doi.org/10.1103/physrevlett.101.265301" @default.
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