Building on the material learned by students in their first few years of
study, this book presents an advanced level course on statistical and
thermal physics. It begins with a review of the formal structure of
statistical mechanics and thermodynamics considered from a unified
viewpoint. After a brief revision of non-interacting systems, emphasis
is laid on interacting systems. First, weakly interacting systems are
considered, where the interest is in seeing how such interactions cause
small deviations from the non-interacting case. Second, systems are
examined where interactions lead to drastic changes, namely phase
transitions. A number of specific examples are given, and these are
unified within the Landau theory of phase transitions. The final chapter
of the book looks at non-equilibrium systems and the way these evolve
towards equilibrium. Here, fluctuations play a vital role, as is
formalized in the Fluctuation-Dissipation theorem.