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We study the vortex dynamics of a quantum degenerate Bose gas through theintensity fluctuations of the interference from particles extracted at twodifferent positions. It is shown numerically with classical field simulationsthat an interacting Bose gas with proliferating vortices exhibits longcorrelation times for these intensity fluctuations. This behavior is contrastedwith the case of a noninteracting gas, that we describe analytically, and withthe case of a well condensed Bose gas without vortices. We discuss theobservability of our predictions in quantum fluids of exciton-polaritons.

The study of random vorticity in quantum fluids through interference fluctuations