Intermediate Inflation or Late Time Acceleration?

Figure 4

The form of the coupling parameter 𝑔(𝜙) has been plotted against 𝜙 (with 𝑓=0.5,ℎ=0.68,𝑡₀=13Gyr,Ω_𝑚𝑜=0.3). It remains almost flat at the later epoch of cosmic evolution, ensuring late time acceleration.