2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/141334We examine the amount of parameter tuning to make slow-roll inflation marginally eternal by considering an R-invariant chaotic inflation as an example of one-parameter tuning in supergravity. The primordial inflation turns out to be possibly marginal in such a setup.4 pages, references addedHigh Energy Physics - Phenomenologytext