Fig. 2: Spreading of coherence for different interaction strengths.
a, Gas evolution for two different scattering lengths a, starting in the same initial state P1. For stronger interactions, the condensate (the peak at k = 0) emerges sooner. b, However, plotting ℓ2(t) reveals that the interaction strength affects only the non-universal initial dynamics (open symbols), whereas the linear growth of ℓ2 in the universal coarsening regime (solid symbols) is the same for both a values. Panels in a and data points in b show averages based on at least 20 measurements. All error bars show standard errors of the measurements.
