Figure 4. Noise-induced limit cycle generation mechanism.

Steady state solution of temperature balance (equation (2)) with (A) constant heat source (Q_g = 0.5) and (B) with the heat generation function dependent on kinetic terms (Q_g = α_Ag_A0exp(−β_A/T) + α_Iexp(−β_I/T)). The heat removal function is Q_r = (T − T_f) + ϕ(T − T_ex) in both cases. Dashed blue lines correspond to the range of Q_r fluctuations for σ = 0.15; g_A0exp(−β_A/T) corresponds to the production term of A (when the concentration of I is below repression threshold). Other parameters are as in Figure 3.