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On unitary implementability of conformal transformations

โœ Scribed by E. Angelopoulos; M. Flato

Publisher
Springer
Year
1978
Tongue
English
Weight
304 KB
Volume
2
Category
Article
ISSN
0377-9017

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โœฆ Synopsis

We show that the only projective representations of the conformal group in a Hilbert space which, when restricted to the Poincar~ subgroup, are unitary irreducible of mass zero and discrete helicity, are the usual unitary representations of SU(2, 2) often called ladder representations. Some physical consequences are also discussed.

๐Ÿ“œ SIMILAR VOLUMES

Unitary transformations with the unitary
Unitary transformations with the unitary operators depending on projection operators
โœ N. F. Stepanov ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 478 KB

## Abstract Unitary transformations of operators and variables are considered for those cases when a Hermitian operator in the expression **U** = exp (__i__**S**) explicitly depends on the projection operators. Some simple examples of such transformations are given and the equations obtained which