@article{oai:oist.repo.nii.ac.jp:00000364,
 author = {Kremer, Mark and Sachdeva, Rashi and Benseny, Albert and Busch, Thomas},
 issue = {6},
 journal = {Physical Review A},
 month = {Dec},
 note = {We study the effects of repulsive on-site interactions on the broadening of the localized Wannier functions used for calculating the parameters to describe ultracold atoms in optical lattices. For this, we replace the common single-particle Wannier functions, which do not contain any information about the interactions, by two-particle Wannier functions obtained from an exact solution which takes the interactions into account. We then use these interaction-dependent basis functions to calculate the Bose-Hubbard model parameters, showing that they are substantially different both at low and high lattice depths from the ones calculated using single-particle Wannier functions. Our results suggest that density effects are not negligible for many parameter ranges and need to be taken into account in metrology experiments.},
 title = {Interaction-induced effects on Bose-Hubbard parameters},
 volume = {96},
 year = {2017}
}