Summary
We analyse the structure of the only higher-spin fermion equation, beside the Fierz-Pauli equation, with Harish-Chandra degree four. It is rewritten in a basis corresponding to invariant subspaces for the irreducible Lorentz representations involved. Its irreducibility is demonstrated. Finally, it is rewritten in the more familiar formalism of Dirac γ-matrices and tensor-spinor fields.
Riassunto
Si analizza la struttura dell’unica equazione fermionico a spin piú alto, oltre all’equazione di Fierz-Pauli, del quarto grado di Harish-Chandra. È riscritta in una base corrispondente a sottospazi invarianti per le rappresentazioni irriducibili di Lorentz coinvolte. Si dimostra la sua irriducibilità. Infine la si riscrive nel formalismo piú familiare delle matrici γ di Dirac e dei campi spinoriali tensoriali.
Резюме
Мы анализируем структруру единственного фермионного уравнения для высших спинов, помимо уравнения Фирца-Паули, в случае четырех степеней Хариша-Чандра. Уравнение переписывается в базисе, соответствующем инвариантным подпространствам для неприводимых представлений Лоренца. Показывается непроводимость уравнения. В заключение уравнение переписывается в более обычном формализме γ-матриц Дирака и тензовно-спинорных полей.
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References
G. Labonté:Nuovo Cimento A,80, 77 (1984).
G. Labonté:Nuovo Cimento A,78, 251 (1983).
G. R. Allcock andS. F. Hall:J. Phys. A,11, 2305 (1978).
M. A. K. Khalil andM. Seetharaman:Phys. Rev. D,18, 3040 (1978).
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This work was done while the author was on sabbatical leave at this address and was financially assisted through a grant from the National Research Council of Canada.
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Labonté, G. On the structure of «the other» spin-3/2 equation of Harish-Chandra degree four. Nuov Cim A 80, 441–453 (1984). https://doi.org/10.1007/BF02773505
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DOI: https://doi.org/10.1007/BF02773505