Mott Transition of Bose--Fermi Mixtures in Optical Lattices Induced by Attractive Interactions
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概要
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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.
- 2013-07-15
著者
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Mori Hiroyuki
Department Of Biological Information Graduate School Of Bioscience And Biotechnology Tokyo Institute
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Mori Hiroyuki
Department of Physics, Tokyo Metropolitan University, Hachiohji-shi, Tokyo 192-0397, Japan
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Masaki Akiko
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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