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تسجيل مستخدم جديدHigher curvature gravities, unlike GR, cannot be bootstrapped from their (usual) linearizations
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We show that higher curvature order gravities, in particular the propagating quadratic curvature models, cannot be derived by self-coupling from their linear, flat space, forms, except through an unphysical version of linearization; only GR can. Separately, we comment on an early version of the self-coupling bootstrap.
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