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Wigner's classification

In mathematics and theoretical physics, Wigner's classification is a classification of the nonnegative ( E ≥ 0 ) {\displaystyle ~(~E\geq 0~)~} energy irreducible unitary representations of the Poincaré group which have either finite or zero mass eigenvalues. (These unitary representations are infinite-dimensional; the group is not semisimple and it does…

Measurement, Geometric approaches to Wigner little groups & Overview

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Massive scalar fields

Theory of projective representations

Further classification

Geometric approaches to Wigner little groups

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Wigner's classification

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Avg. degree1.98
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Wigner's classification

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Wigner's classification → classification of the nonnegative

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group displaystyle spin representations wigner representation unitary poincaré little space theory lambda physics states mass mathrm classification massless se massive

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Wigner's classificationis aclassification of the nonnegative0.90text

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