Figure 4

We plot real part of K₄ at finite temperature for three different values of s = 0.5, s = 1, s = 3 corresponding to sub-Ohmic, Ohmic and super-Ohmic environments with γ = 0.05 and Λ = ω₀.

For each environment, we consider three different temperatures k_BT = 0.01ω₀, k_BT = ω₀ and k_BT = 5ω₀.