Abstract
In an extended relativistic fluid droplet, it is possible to define new internal variables which correspond to the classical counterpart of spin. If we introduce a new constraint, different from Weysenhoff's, we obtain by quantisation the Feynman-Gell-Mann wave equation. This also yields a theoretical connection between mass and spin which can be compared with the observed baryon boson mass spectrum.
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Depaquit, S., Guéret, P. & Vigier, J.P. Classical spin variables and classical counterpart of the Dirac-Feynman-Gell-Mann equation. Int J Theor Phys 4, 19–32 (1971). https://doi.org/10.1007/BF00671377
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DOI: https://doi.org/10.1007/BF00671377