Defect Saturation in a Rapidly Quenched Bose Gas

We investigate the saturation of defect density in an atomic Bose gas rapidly cooled into a superfluid phase. The number quantum vortices, which are spontaneously created quenched gas, exhibits Poissonian distribution not only for slow quench Kibble-Zurek (KZ) scaling regime but also fast case mean vortex is saturated. This shows that caused by destructive collisions, early-time coarsening emerging condensate, further supported observation condensate growth lags quenching regime. Our results demonstrate effect beyond KZ mechanism, opening path studying critical phase transition dynamics using distribution.