# $Sp(8)$ invariant higher spin theory, twistors and geometric BRST formulation of unfolded field equations

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We discuss twistor-like interpretation of the $Sp(8)$ invariant formulation of 4d massless fields in ten dimensional Lagrangian Grassmannian $Sp(8)-P$ which is the generalized space-time in this framework. The correspondence space $\mathbf{C}$ is $SpH(8)-PH$ where $SpH(8)$ is the semidirect product of $Sp(8)$ with Heisenberg group $\HG$ and %

Author: O. A. Gelfond; M. A. Vasiliev

Source: https://archive.org/