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cond-mat.stat-mech2004
Dynamic structure factor of ultracold Bose and Fermi gases in optical lattices
R. Roth, K. Burnett
We investigate the dynamic structure factor of atomic Bose and Fermi gases in one-dimensional optical lattices at zero temperature. The focus is on the generic behaviour of S(k,ome…
cond-mat.stat-mech2003
Phase Diagram of Bosonic Atoms in Two-Color Superlattices
R. Roth, K. Burnett
We investigate the zero temperature phase diagram of a gas of bosonic atoms in one- and two-color standing-wave lattices in the framework of the Bose-Hubbard model. We first introd…