Bose-fermi mixtures in a three-dimensional optical lattice
Zhuang, Jia Ning
Date of Issue2010
School of Materials Science and Engineering
Using the dynamical mean-field theory and the Gutzwiller method, we study the Mott transition in Bose–Fermi mixtures confined in a three-dimensional optical lattice and analyze the effect of fermions on the coherence of bosons. We conclude that increasing fermion composition reduces bosonic coherence in the presence of strong Bose–Fermi interactions and under the condition of the integer filling factors for composite fermions, which consist of one fermion and one or more bosonic holes. Various phases of the mixtures have been demonstrated including phase separation of two species, coexisting regions of superfluid bosons and fermionic liquids, and Mott regions in the phase space spanned by the chemical potentials of the bosons and the fermions.
DRNTU::Science::Physics::Optics and light
Applied Physics B: lasers and optics
© 2010 Springer. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Physics B: Lasers and Optics, Springer. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: http://dx.doi.org/10.1007/s00340-010-4074-y.