Is Planckian discreteness observable in cosmology?
General Relativity and Quantum Cosmology
2025-04-30 v2 High Energy Astrophysical Phenomena
High Energy Physics - Phenomenology
High Energy Physics - Theory
Quantum Physics
Abstract
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 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.
Cite
@article{arxiv.2405.12534,
title = {Is Planckian discreteness observable in cosmology?},
author = {Gabriel R. Bengochea and Gabriel Leon and Alejandro Perez},
journal= {arXiv preprint arXiv:2405.12534},
year = {2025}
}
Comments
8 pages. Version accepted for publication