Spacetime structure of massive gravitinos
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The talk presents an ab initio construct of the spacetime structure underlying massive gravitinos. We argue that single spin interpretation of massive gravitino is untenable, and that a spin measurement in the rest frame for an unpolarized ensemble of massive gravitinos, would yield the results 3/2- with probability one half, and 1/2 with probability one half. The latter is distributed uniformly, i.e. as 1/4, among the two spin-1/2 %2b and spin-1/2- states of opposite parities. From that we draw the conclusion that the massive gravitino should be interpreted as a particle of multiple spin. We expect that a natural extension of this work to finite-range gravity shall endow the graviton with spins 0, 1, and 2 components.