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On the structure of «the other» spin-3/2 equation of Harish-Chandra degree four

О структуре «другого» уравнения со спином 3/2 для четырех степеней Хариша-Чандра

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Il Nuovo Cimento A (1965-1970)

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

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To speed up publication, the author of this paper has agreed to not receive the proofs for correction.

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

PACS. 11.10.

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