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Angular Momentum Transport in Quantum Statistical Mechanics

John S. Dahler

Abstract

Equations of motion are derived for the many-body operators associated with local densities of linear and angular momentum. It is illustrated that the transfer equations for orbital and spin angular momentum are formally identical. Finally, an approximate theory is developed for the elastic tensor of diatomic media or media composed of atoms with intrinsic spin.

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Key concepts: Angular momentum, Angular momentum coupling, Physics, Angular momentum operator, Total angular momentum quantum number, Orbital motion, Angular momentum of light, Azimuthal quantum number