We give a detailed canonical analysis of the n -dimensional f (Riemann) gravity, correcting the earlier results in the literature. We also write the field equations in the Fischer–Marsden form which is amenable to identifying the non-stationary energy on a spacelike hypersurface. We give pure R 2 and R μ ν R μ ν theories as examples.
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Altas et al. (2024) studied this question.
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