For more than 25 years, Alastair Rae's Quantum Mechanics has been one of the most highly regarded textbooks in this area in Europe. Retaining the clarity of its predecessors, this sixth edition presents revised and updated material throughout the text. With the co-authorship of experienced textbook author Jim Napolitano of Temple University, the sixth edition is also ideally suited for use by US students. This new edition fully covers the concepts of quantum mechanics taught in an undergraduate physics course.