For more than 25 years, Quantum Mechanics has been one of the most highly regarded books in this area. This fifth edition offers additional worked examples of the application of quantum mechanics principles to a range of physical problems, more information on modern quantum information technology, and problems at the end of each chapter. This text was one of the first to include a substantial discussion of the conceptual and philosophical implications of quantum mechanics, which has been revised and extended in the fifth edition. Other topics covered include Schrödinger equations, angular momentum, time-independent perturbation theory, time dependence, scattering, and relativity.