QUANTUM MECHANICS describes the phenomena that matter and light exhibit on an atomic scale and so the study of atomic physics, nuclear physics and solid state physics are impossible without a clear understanding of the basic concepts and formalism of Quantum Mechanics. Since Physics deals essentially with numbers – the measurement of physical quantities and the calculations of these quantities on the basis of a theoretical framework – adequate attention has been paid to computation and numerical exercises. This book aims to promote a comprehensive understanding of the subject with illustrative examples. NEW TO THE THIRD EDITION: • Appendix J “Multiple Choice Questions” with solutions (44 pages) • This is in addition to the four appendices F, G, H, I that were included in the Second Edition

• Review Questions • Problems at the end of each chapter • Solutions to Problems

Preface / Preface to the Third Edition / Foundations of Quantum Mechanics / Bound States and Potential Barriers / The WKB Approximation / Approximate Methods for Bound States / Angular Momentum, Spin and Isospin / Equations of Motion and Matrix Mechanics / Time-Dependent Perturbation Theory / Interaction of Radiation with Atom / Theory of Scattering / Transformation between Centre-of-Momentum and Laboratory Systems / Relativistic Wave Equations / Appendixes / Subject Index.

Postgraduate Students and Teachers