Dynamics of two-scalar-field cosmological models beyond the exponential potential
arXiv:1711.02893 · doi:10.1142/S0218271817501644
Abstract
In this paper, we discuss the dynamics of two- scalar-field cosmological models. Unlike in the situation of exponential potential, we find that there are late-time attractors in which one scalar field dominates the energy density of universe and the other one decay. We also discuss the possibility of multiple attractors model which is useful to realize the evolution of the universe from a scaling era to recent acceleration era. We also give the conditions of the existence of multiple attractors.
12 pages,3 figures
References in corpus (8)
- Challenges for scaling cosmologies
- Cosmological Evolution of Interacting Phantom Energy with Dark Matter
- Phantom field dynamics in loop quantum cosmology
- Exact Analysis of Scaling and Dominant Attractors Beyond the Exponential Potential
- A New Approach to Quintessence and a Solution of Multiple Attractors
- Assisted coupled quintessence
- Cosmological dynamical systems
- Coupled quintessence with double exponential potentials