Dark Energy from Ratio Gravity
arXiv:1805.07896 · doi:10.1103/PhysRevD.98.084060
Abstract
The theory of Ratio Gravity (RG) proposes that the curvature of 3+1 spacetime originates from a deformation of a Cross Ratio, where similar mathematical structure to general relativity emerges. This paper studies RG using the framework of the Newman-Penrose spin formalism. After proposing the general formalism, we move on to study a homogeneous and isotropic universe with RG. It is noted that the theory contains a component of dynamical dark energy with novel equation of state.
arXiv comment7 pages. v3 accepted for publication
References in corpus (10)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Dynamics of dark energy
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Dark Energy Constraints from the Cosmic Age and Supernova
- Quintom Cosmology: Theoretical implications and observations
- Dark Energy
- Dynamical dark energy in light of the latest observations
- Holographic Dark Energy
- Cross-ratio Identities and Higher-order Poles of CHY-integrand