Fixing cosmological constant on the event horizon
arXiv:2301.04334 · doi:10.1140/epjc/s10052-022-11033-1
Abstract
Standard cosmological equations are written for the Hubble volume, while the real boundary of space-time is the event horizon. Within the unimodular and thermodynamic approaches to gravity, the dark energy term in cosmological equations appears as an integration constant, which we fix at the event horizon and obtain the observed value for the cosmological constant.
5 pages, no figures
References in corpus (6)
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Thermodynamic Behavior of Friedmann Equation at Apparent Horizon of FRW Universe
- Unimodular Gravity vs General Relativity: A status report
- Emergence and Expansion of Cosmic Space as due to the Quest for Holographic Equipartition
- The Cosmological Constant as a Zero Action Boundary
- Towards an information description of space-time