Quantum Mechanics- central not only to physics but also chemistry, materials science and other fields- is notoriously abstract and difficult. Essential Quantum Mechanics is a uniquely concise and explanatory book that fills the gap between introductory and advanced courses, between popularizations and technical treatises. By focusing on the fundamental structure, concepts and methods of quantum mechanics this introductory yet sophisticated work emphasizes both physical and matehmeatical understanding. A modern perspective is adopted throughout-the goal in part, being to gain entry into the...