9: Strongly Interacting Systems and Phase Transitions Last updated Save as PDF Page ID6391 Contributed by Daniel F. StyerJohn and Marianne Schiffer Professor (Physics) at Oberlin College 9.1: Introduction to Magnetic Systems and Models9.2: Free Energy of the One-Dimensional Ising Model9.3: The Mean-Field Approximation9.4: Correlation Functions in the Ising Model9.5: Computer Simulation9.6: Additional Problems