Mott states under the influence of fermion-boson conversion

被引：14

作者：

Zhou, F ^{[1
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.72.220501

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The author has studied the influence of fermion-boson conversion on Mott states near Feshbach resonances. It is demonstrated that Mott states are unstable with respect to fermion-boson conversion. A branch of collective modes in superfluids has been found, which involve antisymmetric phase oscillations in fermionic and bosonic channels and are always gapped. The low-energy quantum dynamics of a Fermi-Bose superfluid can be fully characterized by either an effective coupled U(1)circle times U(1) quantum rotor Hamiltonian or a coupled XXZ circle times XXZ spin model.

引用

页数：4

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