期刊论文详细信息
Mott states under the influence of fermion-boson conversion | |
Article | |
关键词: EINSTEIN CONDENSATION; GAS; SUPERCONDUCTIVITY; TRANSITION; SUPERFLUID; INSULATOR; MOLECULES; ATOMS; | |
DOI : 10.1103/PhysRevB.72.220501 | |
来源: SCIE |
【 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.
【 授权许可】
Free