超流费米-玻色混合物中的无序诱导相控制
Disorder-Induced Phase Control in Superfluid Fermi-Bose Mixtures
摘要：
我们考虑超冷原子的超流费米气体和具有连续U（1）（相对相位）对称性的分子的玻色-爱因斯坦凝聚体的混合物。研究了空间随机光缔合解离对称性破缺耦合对系统的影响。这样的耦合允许控制费米系统的超流序参量和BCS临界温度以下的温度下的分子的冷凝物波函数之间的相对相位。所提出的相位控制机制属于一般类的无序诱导的秩序现象，依赖于连续对称性的破缺。
英文摘要：
We consider a mixture of a superfluid Fermi gas of ultracold atoms and a Bose-Einstein condensate of molecules possessing a continuous U(1) (relative phase) symmetry. We study the effects that a spatially random photo-associative-dissociative symmetry breaking coupling of the systems. Such coupling allows to control the relative phase between a superfluid order parameter of the Fermi system and the condensate wavefunction of molecules for temperatures below the BCS critical temperature. The presented mechanism of phase control belongs to the general class of disorder-induced order phenomena that rely on breaking of continuous symmetry.
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