Realization of inverse Kibble–Zurek scenario with trapped Bose gases

•Inverse Kibble–Zurek scenario is demonstrated with trapped Bose gas.•Strongly perturbed Bose–Einstein condensate is created experimentally.•Numerical modeling is accomplished for the same setup as in the experiment.•Theoretical explanation is suggested.•Several turbulent regimes are studied, formed by vortices, grains, or waves.

We show that there exists the inverse Kibble–Zurek scenario, when we start with an equilibrium system with broken symmetry and, by imposing perturbations, transform it to a strongly nonequilibrium symmetric state through the sequence of states with spontaneously arising topological defects. We demonstrate the inverse Kibble–Zurek scenario both experimentally, by perturbing the Bose–Einstein condensate of trapped 87Rb atoms, and also by accomplishing numerical simulations for the same setup as in the experiment, the experimental and numerical results being in good agreement with each other.