Top panel: the contour plot of dispersion of mid-gap energy bands induced by vortex superlattice in p_x + ip_y topological SC as a function of paired order parameter Δ in the zone k_x⊗k_y ∈ [−0.1,0.1]⊗[−0.2,0.2]. The paired order parameter is equal to 0.4, 0.8, 1.2, and 1.4 in panels (a), (c), (e), and (g), respectively. Bottom panel: the fitting dispersion of the effective tight-binding Majorana lattice model. From Ref. [16].