Large-scale structure formation in cosmology with classical and tachyonic scalar fields
arXiv:0809.3349 · doi:10.3103/S0884591309010036
Abstract
The evolution of scalar perturbations is studied for 2-component (non-relativistic matter and dark energy) cosmological models at the linear and non-linear stages. The dark energy is assumed to be the scalar field with either classical or tachyonic Lagrangian and constant equation-of-state parameter w. The fields and potentials were reconstructed for the set of cosmological parameters derived from observations. The comparison of the calculated within these models and experimental large-scale structure characteristics is made. It is shown that for w=const such analysis can't remove the existing degeneracy of the dark energy models.
15 pages, 5 figures, text corrected, references added, accepted by Kinematics and Physics of Celestial Bodies
References in corpus (7)
- Dynamics of dark energy
- Cosmological Constraints from the SDSS Luminous Red Galaxies
- Structure Formation in Inhomogeneous Dark Energy Models
- On virialization with dark energy
- Constraining Born-Infeld models of dark energy with CMB anisotropies
- Can cosmological observations uniquely determine the nature of dark energy ?
- Sensitivity of quintessence perturbations to initial conditions