Quantum Mechanics for Pedestrians 2 : Applications and Extensions This book the second in a two volume set provides an introduction to the basics of (mainly) non relativistic quantum mechanics. While the first volume addresses the basic principles this second volume discusses applications and extensions to more complex problems. In addition to topics dealt with in traditional quantum mechanics texts such as symmetries or many body problems it also treats issues of current interest such as entanglement Bell’s inequality decoherence and various aspects of quantum information in detail. Furthermore questions concerning the basis of quantum mechanics and epistemological issues which are relevant e.g. to the realism debate are discussed explicitly. A chapter on the interpretations of quantum mechanics rounds out the book. Readers are introduced to the requisite mathematical tools step by step. In the appendix the most relevant mathematics is compiled in compact form and more advanced topics such as the Lenz vector Hardy’s experiment and Shor’s algorithm are treated in more detail. As an essential aid to learning and teaching 130 exercises are included most of them with solutions. This revised second edition is expanded by an introduction into some ideas and problems of relativistic quantum mechanics. In this second volume an overview of quantum field theory is given and basic conceptions of quantum electrodynamics are treated in some detail. Originally written as a course for students of science education the book addresses all those science students and others who are looking for a reasonably simple fresh and modern introduction to the field One Dimensional Piecewise Constant Potentials Angular Momentum The Hydrogen Atom The Harmonic Oscillator Perturbation Theory Entanglement EPR Bell Symmetries and Conservation Laws The Density Operator Identical Particles Decoherence Scattering Quantum Information Is Quantum Mechanics Complete Interpretations of Quantum Mechanics