Titlebook: Relativity, Groups, Particles; Special Relativity a Roman U. Sexl,Helmuth K. Urbantke Textbook 20011st edition Springer-Verlag/Wien 2001 4-

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,Representation Theory of the Poincaré Group,In this chapter we develop the relation between the relativistic wave equations for free fields and the representation theory of the Poincare group . We then give a brief discussion of the description of invariance or covariance in the formalism of. thereafter turning to a systematic theory of unitary irreducible representations of ..

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978-3-211-83443-5Springer-Verlag/Wien 2001

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Roman U. Sexl,Helmuth K. Urbantkecies—who used to shun violent conflicts—are now actively engaged in conflict prevention and conflict transformation, while their colleagues from defense and foreign policy have taken a much broader interest in parts of the world that previously rarely appeared on their radars. This merger between se

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