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Group-theoretical analysis of Bargman-Wigner equations for massless particles

Анализ с использованием теории групп уравнений Баргмана-Вигнера для безмассовых частиц

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Il Nuovo Cimento A (1965-1970)

Summary

From the expansion of totally symmetric multispinors in terms of tensor coefficients and the Bargmann-Wigner equations (BWE) applied to them, we derive close formulae among these coefficients and the equations of motion of massless fields. In contrast to the massive case i) the fields of mixed symmetries are always zero, ii) the equations of motion are conformally covariant for any spin.

Riassunto

Dallo sviluppo di multispinori totalmente simmetrici in termini di coefficienti tensoriali e delle equazioni di Bergmann-Wigner ad essi applicate, si derivano relazioni strette tra questi coefficienti e le equazioni di moto dei campi privi di massa. In contrasto con il caso con massa i) i campi di simmetria mista sono sempre nulli, ii) le equazioni di moto sono conformemente covarianti per ogni spin.

Резюме

Из разложения полностью симметричных мультиспиноров на основе тензорных коэффициентов и, используя уравнения Баргмана-Вигнера, мы выводим замкнутые соотношения между этими коэффициентами и уравнениями движения безмассовых полей. В противоположность массивному случаю: 1) поля для смешанных симметрий всегда представляют нуль, 2) уравнения движения являются конформно ковариантными для любого спина.

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Rodriguez, M.A., Lorente, M. Group-theoretical analysis of Bargman-Wigner equations for massless particles. Nuov Cim A 83, 249–262 (1984). https://doi.org/10.1007/BF02902600

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PACS. 11.10

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