Summary
It is proven that a relativistic scalar field whose null-plane restriction exists (Z −13 < ∞), and which has c-number commutation relations there, transforms covariantly under dilatation and conformal transformations on a null plane. These transformations are thus unitarily implementable. The restriction of the conformal algebra to the null plane is discussed.
Riassunto
Si dimostra che un campo scalare relativistico, per cui esiste la restrizione nel piano nullo (Z −13 < ∞) e che ivi ha relazioni di commutazione di numero c, si trasforma covariantemento per dilatazioni e trasformazioni conformi sul piano nullo. Queste trasformazioni si possono così adempiere unitariamente. Si discute la restrizione dell’algebra conforme al piano nullo.
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Work supported in part by a grant from the National Science Foundation.
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Rohrlich, F., Streit, L. Dilatation and conformal invariance on null planes. Nuov Cim B 7, 166–174 (1972). https://doi.org/10.1007/BF02827044
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DOI: https://doi.org/10.1007/BF02827044