Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2401.11559 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913334066937856 |
|---|---|
| author | Bertini, Nicolas R. Rodrigues, Davi C. Shapiro, Ilya L. |
| author_facet | Bertini, Nicolas R. Rodrigues, Davi C. Shapiro, Ilya L. |
| contents | We explore the possibility of a consistent cosmology based on the gauge-fixing independent running of the gravitational and cosmological constants ($G$ and $Λ$) in the framework of effective quantum gravity. In particular, their running in this framework was found to satisfy $G \propto Λ^4$. In the cosmological setting, the covariance of the theory provides energy conservation relations, which are impossible to satisfy with the unique scale parameter. However, by introducing the second sub-dominant scale corresponding to the higher-loop corrections and higher-derivative terms, one can close the system of equations for the running of parameters and arrive at the consistent cosmological solutions. This approach yields a change in the cosmological expansion history that affects the ratio of the Hubble parameter today to the Hubble parameter at high redshift. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_11559 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Scale-dependent cosmology from effective quantum gravity in the invariant framework Bertini, Nicolas R. Rodrigues, Davi C. Shapiro, Ilya L. General Relativity and Quantum Cosmology We explore the possibility of a consistent cosmology based on the gauge-fixing independent running of the gravitational and cosmological constants ($G$ and $Λ$) in the framework of effective quantum gravity. In particular, their running in this framework was found to satisfy $G \propto Λ^4$. In the cosmological setting, the covariance of the theory provides energy conservation relations, which are impossible to satisfy with the unique scale parameter. However, by introducing the second sub-dominant scale corresponding to the higher-loop corrections and higher-derivative terms, one can close the system of equations for the running of parameters and arrive at the consistent cosmological solutions. This approach yields a change in the cosmological expansion history that affects the ratio of the Hubble parameter today to the Hubble parameter at high redshift. |
| title | Scale-dependent cosmology from effective quantum gravity in the invariant framework |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2401.11559 |