Titlebook: Lectures in Quantum Mechanics; A Two-Term Course Luigi E. Picasso Textbook 2016 Springer International Publishing Switzerland 2016 Angular

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Particle in a Central Force Field,If a particle is subject to a central force field, the potential depends only on the distance . of the particle from the center of the force, that we will take as the origin of our frame: . = .(.).

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Composite Systems. Pauli Principle,What we are going to discuss now only is a problem of language and notation.