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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/2770 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/2770 http://eprints.org/relation/ismediumThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/2770 2780 2 7956 document 2780 small.jpg image/png e8182e1d13074eeb3e6f3fb490f333fb MD5 1965 2014-01-27 17:46:34 http://eprints.iliauni.edu.ge/722/6/small.jpg 722 6 6 image/png other Thumbnails conversion from text to thumbnail_small ge public

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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/2770 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/2770 http://eprints.org/relation/issmallThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/2770 archive 34 disk0/00/00/07/22 2014-01-30 12:31:37 2015-04-03 06:49:41 2014-01-30 12:31:37 article show Di Liberto M. Creffield C. E. Japaridze G.I. gia_japaridze@iliauni.edu.ge Morais Smith C. pub QC fac_eng public By using a modulated magnetic field in a Feshbach resonance for ultracold fermionic atoms in optical lattices, we show that it is possible to engineer a class of models usually referred to as correlated-hopping models. These models differ from the Hubbard model in exhibiting additional density-dependent interaction terms that affect the hopping processes. In addition to the spin-SU(2) symmetry, they also possess a charge-SU(2) symmetry, which opens the possibility of investigating the $\eta$-pairing mechanism for superconductivity introduced by Yang for the Hubbard model. We discuss the known solution of the model in 1D (where $\eta$ states have been found in the degenerate manifold of the ground state) and show that, away from the integrable point, quantum Monte Carlo simulations at half filling predict the emergence of a phase with coexisting incommensurate spin and charge order. 2014-01-27 published Physical Review A 89 1 American Physical Society 011324-1 TRUE