Primordial Perturbations and Inflation in Bounded Curvature Spacetime

Primordial Perturbations and Inflation in Bounded Curvature Spacetime We investigate the behaviour of primordial perturbations in a cosmological setting where spacetime curvature is subject to a universal saturation bound. Without selecting a specific inflationary model, we examine how perturbations evolve near saturation and during the transition to standard expansion. We argue that perturbative degrees of freedom generically undergo freeze-out as curvature approaches its maximum, leading to strong suppression of pre-saturation structure. Inflationary dynamics, when present, dominate the resulting perturbation spectrum, rendering any inherited imprint subdominant and potentially observable only on the largest…