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Generalized total angular momentum operator for the Dirac equation in curved space-time

Journal Article · · Phys. Rev., D; (United States)

It is found that an operator of the form i..gamma../sub 5/..gamma../sup ..mu../(f/sub ..mu..//sup ..nu../del/sub ..nu../ - 1/6..gamma../sup ..nu../..gamma../sup p/f/sub munu(p/) commutes with the Dirac operator ..gamma../sup ..mu../del/sub ..nu../ whenever f/sub munu/ is an antisymmetric tensor satisfying the Penrose-Floyd equation f/sub ..mu..//sub( nu(p/) = 0. Such a tensor exists notably in the Kerr solutions and in the flat-space limit wherein the operator can be interpreted as the square root of the ordinary total squared angular momentum Casimir operator of the rotation group.

Research Organization:
Groupe d'Astrophysique Relativiste, Observatoire de Paris, Meudon, France
OSTI ID:
6205604
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 19:4; ISSN PRVDA
Country of Publication:
United States
Language:
English