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arXiv · hep-th/0509092

The continuous spin limit of higher spin field equations

X. Bekaert·J. Mourad
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Abstract

We show that the Wigner equations describing the continuous spin representations can be obtained as a limit of massive higher-spin field equations. The limit involves a suitable scaling of the wave function, the mass going to zero and the spin to infinity with their product being fixed. The result allows to transform the Wigner equations to a gauge invariant Fronsdal-like form. We also give the generalisation of the Wigner equations to higher dimensions with fields belonging to arbitrary representations of the massless little group.

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X. Bekaert, J. Mourad. 2005-11-10. The continuous spin limit of higher spin field equations. https://doi.org/10.1088/1126-6708%2F2006%2F01%2F115

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