Reconciling a decelerating Universe with cosmological observations
Abstract
Can modern cosmological observations be reconciled with a general-relativistic Universe without an antigravitating energy source? Usually, the answer to this question by cosmologists is in the negative, and it is commonly believed that the observed excess dimming of supernovae relative to that in the Milne model is evidence for dark energy. In this paper, we develop theorems that clarify the conditions for such an excess dimming, based on which we argue that the answer to the above question may counterintuitively be "yes."
- Publication:
-
Physical Review D
- Pub Date:
- May 2023
- DOI:
- 10.1103/PhysRevD.107.L101301
- arXiv:
- arXiv:2212.05568
- Bibcode:
- 2023PhRvD.107j1301H
- Keywords:
-
- General Relativity and Quantum Cosmology;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 6 pages. Matches published version in PRD