Cosmological Constraints on the Generalized Uncertainty Principle from Redshift-Space Distortions
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arXiv
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| Natura: | Preprint |
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2026
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| author | Paliathanasis, Andronikos |
| author_facet | Paliathanasis, Andronikos |
| contents | We investigate the imprints of the Generalized Uncertainty Principle on cosmological scales by using redshift-space distortion measurements in combination with background cosmological data to determine constraints on the deformation parameter $β$. We consider the modified Poisson bracket related to the existence of a minimal length, which leads to a modified Raychaudhuri equation for the standard $Λ$CDM model and gives rise to a phenomenological one-parameter dynamical dark energy scenario. Through this modification, we can reveal the effects of the minimal length on the late-time structure of the universe. We employ the $f$ and $fσ_8$ measurements of the growth rate combined with background data, including cosmic chronometers, baryon acoustic oscillations and Type Ia supernova observations. The observational constraints reveal a systematically negative value for the deformation parameter $β$, with the $Λ$CDM limit lying within the 95\% credible interval. When supernova data are included, the Akaike Information Criterion indicates weak-to-strong support in favour of the GUP-modified model depending on the SNIa catalogue, while the Bayesian evidence suggests a weak preference. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_01713 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Cosmological Constraints on the Generalized Uncertainty Principle from Redshift-Space Distortions Paliathanasis, Andronikos Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology We investigate the imprints of the Generalized Uncertainty Principle on cosmological scales by using redshift-space distortion measurements in combination with background cosmological data to determine constraints on the deformation parameter $β$. We consider the modified Poisson bracket related to the existence of a minimal length, which leads to a modified Raychaudhuri equation for the standard $Λ$CDM model and gives rise to a phenomenological one-parameter dynamical dark energy scenario. Through this modification, we can reveal the effects of the minimal length on the late-time structure of the universe. We employ the $f$ and $fσ_8$ measurements of the growth rate combined with background data, including cosmic chronometers, baryon acoustic oscillations and Type Ia supernova observations. The observational constraints reveal a systematically negative value for the deformation parameter $β$, with the $Λ$CDM limit lying within the 95\% credible interval. When supernova data are included, the Akaike Information Criterion indicates weak-to-strong support in favour of the GUP-modified model depending on the SNIa catalogue, while the Bayesian evidence suggests a weak preference. |
| title | Cosmological Constraints on the Generalized Uncertainty Principle from Redshift-Space Distortions |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2604.01713 |