Zero‐Mass Representations of the Proper Inhomogeneous Lorentz Group

Autor:	David Korff
Rok vydání:	1964
Předmět:	Physics Superselection Representation theory of the Lorentz group Zero (complex analysis) Statistical and Nonlinear Physics Lorentz group Spin representation Lorentz factor symbols.namesake Classical mechanics Poincaré group symbols Limit (mathematics) Mathematical Physics Mathematical physics
Zdroj:	Journal of Mathematical Physics. 5:869-877
ISSN:	1089-7658 0022-2488
DOI:	10.1063/1.1704189
Popis:	The representations of the proper inhomogeneous Lorentz group are investigated as a function of both real and imaginary mass, in the limit as the mass approaches zero. One obtains only the physical mass‐zero representations in either limit, the infinite spin representations being unique to zero mass. It is found that there exists a superselection rule which prohibits the position and spin operators from being physically observable in the mass‐zero limit.
Databáze:	OpenAIRE
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