Constraint-free"theories of gravitation


Lovelock actions(more precisely, extended Gauss-Bonnet forms) when variedas Cartan forms on subspacesof higherdimensionalflatRiemannian manifolds,generatewellset,causalexteriordifferential systems. In particular,the Einstein-Hilbert action4-form, variedon a 4 dimensionalsubspace of El0, yieldsa wellsetgeneralizedtheoryof gravityhavingno constraints. Iticci… (More)


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