Dynamics of momentum distribution and structure factor in a weakly interacting Bose gas with a periodical modulation

Ning Liu(刘宁),Z C Tu(涂展春)

Figure 3. The unstable dynamics for λ = 1, q = 0.1. The evolving dynamical structure factor and momentum distribution are all exponentially increasing. The evolving dynamical structure factor has evident peak structure, while the momentum distribution becomes flat at $\tau =(2n+1)\pi /4$.