Higher-spin gauge theories — Integrability versus locality
We discuss properties of non-linear equations of motion which describe higher-spin gauge interactions for massive spin-0 and spin-1/2 matter fields in 2+1 dimensional anti-de Sitter space. An integrating flow is found which reduces the full non-linear system to the free field equations via a non-local Bäcklund-Nicolai-type mapping.
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