The influence of the atomic Bohr frequency ω₀ on the dynamics of atomic squeezing factor F₂ (black solid line) and the concurrence C (blue dashed line) versus γ₀t when Ω = γ₀. (a) ω₀ = 8γ₀; (b) ω₀ = 16γ₀. Other parameters are θ = π/4, φ = 0, and λ = 0.01γ₀. The red dotted lines indicate the envelope lines of the F₂-oscillations.