Cosmological constraints for the Cosmic Defect theory
arXiv:1102.4435 · doi:10.1142/S0218271811019268
Abstract
The Cosmic Defect theory has been confronted with four observational constraints: primordial nuclear species abundances emerging from the big bang nucleosynthesis; large scale structure formation in the universe; cosmic microwave background acoustic scale; luminosity distances of type Ia supernovae. The test has been based on a statistical analysis of the a posteriori probabilities for three parameters of the theory. The result has been quite satisfactory and such that the performance of the theory is not distinguishable from the one of the Lambda-CDM theory. The use of the optimal values of the parameters for the calculation of the Hubble constant and the age of the universe confirms the compatibility of the Cosmic Defect approach with observations.
13 pages, 1 figure, in press on IJMPD
References in corpus (7)
- Information criteria for astrophysical model selection
- Can dark energy evolve to the Phantom?
- Primordial Nucleosynthesis: from precision cosmology to fundamental physics
- The primordial abundance of 4He: evidence for non-standard big bang nucleosynthesis
- Cosmic Duality in Quintom Universe
- On using the CMB shift parameter in tests of models of dark energy
- A tensor theory of space-time as a strained material continuum