Statistical Physics

This book is the result of the statistical physics course taught at Université Ibn Zohr. It offers a rigorous, step-by-step approach to the fundamental concepts of statistical physics, focusing on their application to concrete physical systems.The book first introduces the basic principles of statistical mechanics, setting out the different distributions (Maxwell-Boltzmann, Fermi-Dirac and Bose-Einstein) and their physical implications. It then explores in detail the behavior of perfect gases of fermions and bosons, highlighting the quantum effects that emerge at low temperatures, such as Bose-Einstein condensation and fermion degeneracy.In this book, a simple pedagogical approach is envisaged, illustrated by detailed demonstrations and concrete examples, facilitating understanding of the most abstract concepts.