On curvature expansion of higher-spin gauge theory

We examine the curvature expansion of the field equations of a four-dimensional higher-spin gauge theory extension of anti-de Sitter gravity. The theory contains massless particles of spin 0, 2,4, . . . that arise in the symmetric product of two spin-0 singletons. We cast the curvature expansion into manifestly covariant form and elucidate the structure of the equations and observe a significant simplification.