Reconstructing the dark energy potential
arXiv:1712.05143 · doi:10.1088/1475-7516/2018/01/018
Abstract
Dark energy equation of state can be effectively described by that of a barotropic fluid. The barotropic fluid model describes the background evolution and the functional form of the equation of state parameter is well constrained by the observations. Equally viable explanations of dark energy are via scalar field models, both canonical and non-canonical; these scalar field models being low energy descriptions of an underlying high energy theory. In this paper, we attempt to reconcile the two approaches to dark energy by way of reconstructing the evolution of the scalar field potential. For this analysis, we consider canonical quintessence scalar field and the phantom field for this reconstruction. We attempt to understand the analytical or semi-analytical forms of scalar field potentials corresponding to typical well behaved parameterisations of dark energy using the constraints from recent observations.
18 pages, 10 figures, accepted for publication in JCAP
References in corpus (16)
- Dynamics of dark energy
- Cosmology and the Fate of Dilatation Symmetry
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
- Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
- Dark energy cosmology from higher-order, string-inspired gravity and its reconstruction
- The shape of the SDSS DR5 galaxy power spectrum
- Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields
- Structure formation in the presence of dark energy perturbations
- A New Equation of State for Dark Energy Model
- Scalar Field Dark Energy Perturbations and their Scale Dependence
- Evolution of Dark Energy Perturbations in Scalar-Tensor Cosmologies
- Direct Reconstruction of the Dark Energy Scalar-Field Potential
- Approximation of the potential in scalar field dark energy models
- A comparison of perturbations in fluid and scalar field models of dark energy
- Effect of dark energy sound speed and equation of state on CDM power spectrum