Mott-Hubbard transition in the mass-imbalanced Hubbard model Marie-Therese Philipp, Markus Wallerberger, Patrik Gunacker and Karsten Held Eur. Phys. J. B, 90 6 (2017) 114 Published online: 19 June 2017 DOI: 10.1140/epjb/e2017-80115-7