Figure 2
From: Hierarchical-environment-assisted non-Markovian and its effect on thermodynamic properties
The transition from Markovian to non-Markovian dynamics induced by manipulating coupling strength γ and δ. The \(\mathcal{N}\) in Eq. (13) is performed over all possible θ and φ of initial state (14). And the green stars represent \(\mathcal{N}\) being equal to zero (Markovian region) and the red dots represent \(\mathcal{N}\) being larger than zero (non-Markovian region)