Source: wikibot/allen-cahn-equation
= Allen–Cahn equation
{wiki=Allen–Cahn_equation}
The Allen-Cahn equation is a partial differential equation that describes the evolution of phase interfaces in materials science and represents the dynamics of gas-liquid phase transitions typically in the context of, but not limited to, crystallization processes. It is an example of a conserved order parameter system and is derived from the principles of thermodynamics and variational calculus.