Figure 1

Sketches toward the proposed self-consistent \(\lambda ^2\)-model: (a) and (b) the examples—the crosses of the system in crystalline and fluid state (taken from our MD simulations). Voronoi cells are coloured in accordance with corresponding values of \(\lambda ^2\)-parameter. (c) and (d) Schematically illustrate free energy dependence \(F(\lambda ^2)\) (in homogeneous system) and the generalised power \(Q(\lambda ^2)\) conjugated to the \(\lambda ^2\)-field, shown with blue solid lines. The dashed red lines illustrate the stepwise approximations (4) and (6).