Induced transitions in the attractive Bose-Hubbard model

Mukesh Khanore, Bishwajyoti Dey

Kwai-Kong Ng, Ming-Fong Yang

Makoto Yamashita, Michael W. Jack

Olli Mansikkamäki, Matti Silveri

Akiko Masaki, 弘之 森

We numerically studied Bose–Fermi mixtures in one-dimensional optical lattices using a modified Bose–Fermi–Hubbard model. We derived the modified Bose–Fermi–Hubbard model in a tight-binding approximation, retaining the terms which were usually ignored. Quantum Monte Carlo simulations were then performed on the model to demonstrate a bosonic Mott transition of the Bose–Fermi mixtures. This gives another scenario of the fermion-induced decoherence of bosons observed in some experiments.

Akiko Masaki, 弘之 森

Bose-Fermi mixtures with attractive Bose-Fermi interactions in one-dimensional optical lattices are studied by using Quantum Monte Carlo simulations of an extended Bose-Fermi Hubbard model. We first derived the extended Hubbard model with the hopping terms of each species modified to include interaction effects. Bosonic Mott transition induced by introducing fermions into bosons is demonstrated by the simulations.