Phase space analysis for a scalar-tensor model with kinetic and Gauss-Bonnet couplings
arXiv:1609.06544 · doi:10.1103/PhysRevD.94.063528
Abstract
We study the phase space for an scalar-tensor string inspired model of dark energy with non minimal kinetic and Gauss Bonnet couplings. The form of the scalar potential and of the coupling terms is of the exponential type, which give rise to appealing cosmological solutions. The critical points describe a variety of cosmological scenarios that go from matter or radiation dominated universe to dark energy dominated universe. There were found trajectories in the phase space departing from unstable or saddle fixed points and arriving to the stable scalar field dominated point corresponding to late-time accelerated expansion.
arXiv comment17 pages, 9 figures, accepted in PRD
References in corpus (33)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Dynamics of dark energy
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- The Cosmological Constant and Dark Energy
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- Cosmological Constant - the Weight of the Vacuum
- Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
- Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample
- Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
- Modified Gauss-Bonnet theory as gravitational alternative for dark energy
- Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
- Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
- Gauss-Bonnet dark energy
- Structure formation with a self-tuning scalar field
- Dark energy cosmology from higher-order, string-inspired gravity and its reconstruction
- Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy
- Gauss-Bonnet Quintessence: Background Evolution, Large Scale Structure and Cosmological Constraints
- Symmetries of higher-order string gravity actions
- Friedmann-Robertson-Walker brane cosmological equations from the five-dimensional bulk (A)dS black hole
- Crossing the Phantom Divide Barrier with Scalar Tensor Theories
- Dark energy from modified F(R)-scalar-Gauss-Bonnet gravity
- Gauss-Bonnet cosmologies: crossing the phantom divide and the transition from matter dominance to dark energy
- String-inspired cosmology: Late time transition from scaling matter era to dark energy universe caused by a Gauss-Bonnet coupling
- Evolution of cosmological perturbations in non-singular string cosmologies
- General Non-minimal Kinetic coupling to gravity
- Dynamics of dark energy models and centre manifolds
- Non-minimal Kinetic coupling to gravity and accelerated expansion
- On compatibility of string effective action with an accelerating universe
- Dark energy from scalar field with Gauss Bonnet and non-minimal kinetic coupling
- Big Rip and Little Rip solutions in scalar model with kinetic and Gauss Bonnet couplings
- Lovelock Tensor as Generalized Einstein Tensor
- Non-minimal kinetic coupling and Chaplygin gas cosmology
- Late time cosmological scenarios from scalar field with Gauss Bonnet and non-minimal kinetic couplings
Cited by in corpus (6)
- Dynamical systems applied to cosmology: dark energy and modified gravity
- Consistent Scalar and Tensor Perturbation Power Spectra in Single Fluid Matter Bounce with Dark Energy Era
- Dynamical analysis of interacting dark energy model in the framework of particle creation mechanism
- Slow-Roll Inflation with Exponential Potential in Scalar-Tensor Models
- Dynamical analysis for a scalar-tensor model with kinetic and non-minimal couplings
- The speed of gravitational waves and power-law solutions in a scalar-tensor model