Normalized transition probability P_1,n(t) = |a₁(t)|²/(|a₁(t)|² + |a₂(t)|⁴²) for (a) gt₀ = –10, (b) gt₀ = –1, (c) gt₀ = –0.5, and (d) gt₀ = 0. The parameters are given as g = 1, f₁/g = 5, f₀/g = −4g/f₁ = −4/5, and ν1/g=16−f12/g2=i3 . The initial conditions are a₁(t₀) = 1 and a₂(t₀) = 0. The dashed lines are the exact results of the normalized final transition probability P1,nf .