A. Maria Rey, Burnett, K., Roth, R., Edwards, M., Williams, C. J., and Clark, C. W.,
“Bogoliubov approach to superfluidity of atoms in an optical lattice”,
Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 36, no. 5, pp. 825 - 841, 2003.
A. M. Childs, Gosset, D., and Webb, Z.,
“The Bose-Hubbard model is QMA-complete”,
Proceedings of the 41st International Colloquium on Automata, Languages, and Programming (ICALP 2014), vol. 8572, pp. 308-319, 2014.