2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/4078Inflation can act as a space-time microscope for Planck or string scale effects, leaving potentially observable traces in the primordial perturbation spectrum. I discuss two frameworks that were used recently to study this phenomenon: nonlinear dispersion and short distance uncertainty.9 pages. Talk presented at COSMO-01, Rovaniemi, Finland, August 29 -- September 4, 2001AstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext