Is Planckian Discreteness Observable in Cosmology?
A Planck scale inflationary era—in a quantum gravity theory predicting discreteness of quantum geometry at the fundamental scale—produces the scale-invariant spectrum of inhomogeneities with a very small tensor-to-scalar ratio of perturbations and a hot big bang leading to a natural dark matter genesis scenario. Here, we evoke the possibility that some of the major puzzles in cosmology would have an explanation rooted in quantum gravity.
Authors
- Alejandro Pérez (ORCID: https://orcid.org/0000-0002-9460-140X)
- Gabriel León (ORCID: https://orcid.org/0000-0002-6985-267X)
- Gabriel R. Bengochea (ORCID: https://orcid.org/0000-0001-9060-3400)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université de Toulon (FR)
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Aix-Marseille Université (FR)
- Universidad de Buenos Aires (AR)
- Institute of Astronomy and Space Physics (AR)
- Centre de Physique Théorique (FR)
- Universidad Nacional de La Plata (AR)
Publication Details
- Journal
- Universe
- Published
- 2025-04-27
- DOI
- https://doi.org/10.3390/universe11050139
- Citations
- 3
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 3.46
Funders
- John Templeton Foundation
- Consejo Nacional de Investigaciones Científicas y Técnicas
- Universidad Nacional de La Plata