Department of Physics

10ΥΕΚΟ04 Statistical Physics

Course webpage:   https://eclass.uoa.gr/courses/PHYS260

Course outline

Course content

• Linear response to an external time-dependent excitation. Fluctuation-dissipation theorem.
• Ferromagnetism. Exchange interaction. Ising model. Weiss theory.
• The Bragg-Williams approximation. Applications.
• The Bethe approximation. Bethe lattices. Applications.
• Symmetry. The concept of order parameter. Construction of the Landau functional.
• First- and second-order phase transitions. Critical points. Critical exponents. Correlation length. Scaling laws. Perturbations. Response functions.
• Phase transitions in quantum systems: Superfluids, Stoner magnetism.