This book is the third volume of the renowned Course of Theoretical Physics series, authored by Lev Davidovich Landau and Evgeny Mikhailovich Lifshitz. It is a classic advanced reference in non-relativistic quantum mechanics, presenting its fundamental principles and methods through a concise, analytical, and physically insightful approach. The book covers the basic principles of quantum mechanics, Schrödinger's equation, angular momentum, motion in a central field, perturbation theory, the quasiclassical approximation, spin, the identity of particles, atoms and molecules, symmetry theory, nuclear structure, and elastic and inelastic collisions. Emphasizing physical reasoning and rigorous mathematical formulation, it is intended for advanced physics students and researchers in theoretical physics.
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