The quantum entanglement C (red solid line), quantum discord QD (green dashed line), and the l1 norm of coherence Cl1 (blue dot–dashed line) as a function of scaled time gt with the different coupling ratio γ/α, (a) γ/α = 1.25, (b) γ/α = 1.5. Other parameters: α = g, N = 50, β = 1. |