The mean-field approximation replaces interactions with a self-consistent average field, neglecting correlated fluctuations around that average.
This is a use of mean-field theory, whose general framework also applies beyond a Landau free-energy model.
A self-consistency equation requires the average field assumed in a mean-field approximation to equal the expectation value calculated in that field.
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- BCS dimensionless coupling
- BCS gap equation
- Binary Flory-Huggins polymer blend
- Blume-Capel mean-field transition at zero single-ion anisotropy
- Blume–Capel mean-field tricritical parameters
- Correlation-volume derivation of the scalar Ginzburg ratio
- Critical region of a phase transition
- Dissociative adsorption
- Field-induced critical endpoint of the isotropic-nematic transition
- Ginzburg criterion
- Landau-de Gennes free energy
- Magnetic compensation temperature
- Mean-field theory
- Mean-field theory of the Ising model
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- Reduced BCS pairing Hamiltonian
- Self-consistency equation
- Single-mode smectic mean-field free energy
- Two-component radial quartic Landau potential
- Uniform spin field and magnetization
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