In the previous edition of this book, the author reformulated classical mechanics as a classical theory with an undetermined constant. As the constant approaches zero the theory reduces to Newton's exactly, but when set equal to the Planck constant the theory reduces to the Schrödinger representation of quantum mechanics. Thus the new theory, at least in its mathematical form, can be learned without ramifications and complexity. Over the years, the book has shepherded the growth of a generation of physicists.

In this expanded edition, a similar trick is applied to introduce matrix mechanics. The matrix formulation presented allows quantum theory to be generalized to new physical systems such as electron spin, which cannot be done by the Schrödinger approach.

The result is a textbook which promises to provide a future generation of students a clear, usable and authoritative resource to study the fundamentals of quantum mechanics. Twenty new problems are added to existing chapters.

Contents:

• Historical Introduction
• The Schrödinger Equation and Its Mathematical Implications
• The Free Particle
• The Linear Harmonic Oscillator
• One-Dimensional Potential Barrier Problems
• The Physical Meaning of Quantum Mechanics
• General Methods for One-Dimensional Problems
• Three-Dimensional Problems
• The Three-Dimensional Harmonic Oscillator
• Time-Independent Perturbation Theory
• Time-Dependent Perturbation Theory
• General Formulation of Quantum Mechanics and Its Applications
• Matrix Mechanics