Editing Mean-field theory (section)

===Application to other systems===
Similarly, MFT can be applied to other types of Hamiltonian as in the following cases:
* To study the metal–[[superconductor]] transition. In this case, the analog of the magnetization is the superconducting gap <math>\Delta</math>.
* The molecular field of a [[liquid crystal]] that emerges when the [[Laplacian]] of the director field is non-zero.
* To determine the optimal [[amino acid]] [[side chain]] packing given a fixed [[tertiary structure|protein backbone]] in [[protein structure prediction]] (see [[Self-consistent mean field (biology)]]).
* To determine the [[elasticity (physics)|elastic properties]] of a composite material.
Variationally minimisation like mean field theory can be also be used in [[Variational Bayesian methods|statistical inference.]]