Disorder-Induced Phase Control in Superfluid Fermi-Bose Mixtures

Details Disorder-Induced Phase Control in Superfluid Fermi-Bose Mixtures Disorder-Induced Phase Control in Superfluid Fermi-Bose Mixtures

2008-08-02

arxiv.org/abs/0808.0259v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 2 figures

Scientific paper

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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