Relativistic orbital angular momentum and spin observables

We exploit the manifestly Lorentz-covariant natures of momentum and of Pauli--Lubanski spin to give prescriptions for the construction of translationally invariant relativistic c.m. observables. We show that commutators of relativistic c.m. spins coincide with those of the corresponding nonrelativis...

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Veröffentlicht in:	Phys. Rev., D; (United States) D; (United States), 1976-01, Vol.14 (8), p.2155-2161
1. Verfasser:	Tindle, Graham L.
Format:	Artikel
Sprache:	eng
Schlagworte:	645500 - High Energy Physics- Scattering Theory- (-1987) 657002 - Theoretical & Mathematical Physics- Classical & Quantum Mechanics AMPLITUDES ANGULAR MOMENTUM CENTER-OF-MASS SYSTEM CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COMMUTATION RELATIONS INVARIANCE PRINCIPLES LORENTZ INVARIANCE ORBITAL ANGULAR MOMENTUM PARTICLE KINEMATICS PARTICLE PROPERTIES PHYSICS OF ELEMENTARY PARTICLES AND FIELDS SCATTERING AMPLITUDES SPIN
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Zusammenfassung:	We exploit the manifestly Lorentz-covariant natures of momentum and of Pauli--Lubanski spin to give prescriptions for the construction of translationally invariant relativistic c.m. observables. We show that commutators of relativistic c.m. spins coincide with those of the corresponding nonrelativistic observables, and prove that all rotationally invariant functions of c.m. spins and c.m. momenta are Poincare invariant. (AIP)
ISSN:	0556-2821
DOI:	10.1103/PhysRevD.14.2155