This book presents principles, basic concepts and application of Statistical Mechanics.

The standard undergraduate syllabus in Physics includes in introductory course in Statistical Mechanics, whereas the postgraduate course in Statistical Mechanics is much more extensive in scope. This book is intended for both categories of students. Students often find it difficult to solve problems on Statistical Mechanics. So for their convenience, a sufficient number of solved problems are incorporated after each topic. In fact around 138 solved problems are given in this book.

Broadly it covers the following topics:

• Basis of Statistical Mechanics

• Elements of Ensemble Theory

• Classical or Maxwell-Boltzmann Statistics

• Foundation of Quantum Statistics

• Fermi-Dirac Statistics

• Bose-Einstein Statistics

• Interacting Classical Systems: The Method of Cluster Expansion

• Introduction to Phase Transition