2 papers
gr-qc2026
Robustness of the primordial power spectrum in hybrid loop quantum cosmology to approximations near the bounce
Kristina Giesel, Almudena Guillén, Guillermo A. Mena Marugán +1
We prove the robustness of the analytic approximation used in (hybrid) loop quantum cosmology to compute the primordial power spectrum of the cosmological perturbations for a recen…
gr-qc2026
Parametrization of the primordial power spectrum in loop quantum cosmology
Almudena Guillén, Kai Langer, Guillermo A. Mena Marugán +2
We investigate the imprints on the angular power spectra of cosmological perturbations of a pre-inflationary bounce phase, as described by the hybrid and dressed metric approaches…