7: Mean Field Theory of Phase Transitions Last updated Save as PDF Page ID18588 Contributed by Daniel ArovasProfessor (Physics) at UC San Diego 7.1: The van der Waals system7.2: Fluids, Magnets, and the Ising Model7.3: Mean Field Theory7.4: Variational Density Matrix Method7.5: Landau Theory of Phase Transitions7.6: Mean Field Theory of Fluctuations7.7: Global Symmetries7.8: Ginzburg-Landau Theory7.9: Appendix I- Equivalence of the Mean Field Descriptions7.10: Appendix II- Additional Examples7.S: Summary Thumbnail: Domain walls in the two-dimensional Ising model.