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 gene...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/11/5/139 |
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| author | Gabriel R. Bengochea Gabriel León Alejandro Perez |
| author_facet | Gabriel R. Bengochea Gabriel León Alejandro Perez |
| author_sort | Gabriel R. Bengochea |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-b657571fb31349c597d4973ca52e9c2f |
| institution | Kabale University |
| issn | 2218-1997 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj-art-b657571fb31349c597d4973ca52e9c2f2025-08-20T03:47:58ZengMDPI AGUniverse2218-19972025-04-0111513910.3390/universe11050139Is Planckian Discreteness Observable in Cosmology?Gabriel R. Bengochea0Gabriel León1Alejandro Perez2Instituto de Astronomía y Física del Espacio (IAFE), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Universidad de Buenos Aires, Buenos Aires 1428, ArgentinaGrupo de Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, La Plata 1900, ArgentinaCNRS, Centre de Physique Théorique, Aix Marseille Université, Université de Toulon, 13000 Marseille, FranceA 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.https://www.mdpi.com/2218-1997/11/5/139quantum cosmologyinflationearly universe |
| spellingShingle | Gabriel R. Bengochea Gabriel León Alejandro Perez Is Planckian Discreteness Observable in Cosmology? Universe quantum cosmology inflation early universe |
| title | Is Planckian Discreteness Observable in Cosmology? |
| title_full | Is Planckian Discreteness Observable in Cosmology? |
| title_fullStr | Is Planckian Discreteness Observable in Cosmology? |
| title_full_unstemmed | Is Planckian Discreteness Observable in Cosmology? |
| title_short | Is Planckian Discreteness Observable in Cosmology? |
| title_sort | is planckian discreteness observable in cosmology |
| topic | quantum cosmology inflation early universe |
| url | https://www.mdpi.com/2218-1997/11/5/139 |
| work_keys_str_mv | AT gabrielrbengochea isplanckiandiscretenessobservableincosmology AT gabrielleon isplanckiandiscretenessobservableincosmology AT alejandroperez isplanckiandiscretenessobservableincosmology |