Decaying Vacuum Cosmology and its Scalar Field Description
Cosmology and Nongalactic Astrophysics
2012-04-10 v1
Abstract
We discuss the cosmological consequences of an interacting model in the dark sector in which the component evolves as a truncated power series of the Hubble parameter. In order to constrain the free parameters of the model we carry out a joint statistical analysis involving observational data from current type Ia supernovae, recent estimates of the cosmic microwave background shift parameter and baryon acoustic oscillations measurements. Finally, we adopt a theoretical method to derive the coupled scalar field version for this non-equilibrium decaying vacuum accelerating cosmology.
Keywords
Cite
@article{arxiv.1204.1864,
title = {Decaying Vacuum Cosmology and its Scalar Field Description},
author = {F. E. M. Costa and J. A. S. Lima and F. A. Oliveira},
journal= {arXiv preprint arXiv:1204.1864},
year = {2012}
}
Comments
5 pages, 2 figures