On unitary implementability of conformal
β
E. Angelopoulos; M. Flato
π
Article
π
1978
π
Springer
π
English
β 304 KB
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