Figure 2 : Illustration of the main idea of the theory.

From: Thermodynamics of freezing and melting

Figure 2

The freezing and melting lines are both close to isomorphs along which basically everything is known because the reduced-unit structure and dynamics are invariant to a very good approximation. Properties along the freezing and melting lines are estimated via first-order Taylor expansions by moving from an isomorph to the freezing or melting line; the two reference isomorphs (a liquid and a solid one) are determined from computer simulations at T0=2.0ɛ/kB. Details are given in the ‘Methods’ section.