Dark energy generated from a (super)string effective action with higher order curvature corrections and a dynamical dilaton

Abstract

We investigate the possibility of a dark energy universe emerging from an action with higher-order string loop corrections to Einstein gravity in the presence of a massless dilaton. These curvature corrections (up to $R^4$ order) are different depending upon the type of (super)string model which is considered. We find in fact that Type II, heterotic, and bosonic strings respond differently to dark energy. A dark energy solution is shown to exist in the case of the bosonic string, while the other two theories do not lead to realistic dark energy universes. Detailed analysis of the dynamical stability of the de-Sitter solution is presented for the case of a bosonic string. A general prescription for the construction of a de-Sitter solution for the low-energy (super)string effective action is also indicated. Beyond the low-energy (super)string effective action, when the higher-curvature correction coefficients depend on the dilaton, the reconstruction of the theory from the universe expansion history is done with a corresponding prescription for the scalar potentials.

15 pages, 7 eps figures, minor corrections, published version

References in corpus (27)

• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• de Sitter Vacua in String Theory
• Cosmological Constant - the Weight of the Vacuum
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• Modified gravity with negative and positive powers of the curvature: unification of the inflation and of the cosmic acceleration
• Modified Gauss-Bonnet theory as gravitational alternative for dark energy
• Properties of singularities in (phantom) dark energy universe
• Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
• Gauss-Bonnet dark energy
• Reconstructing Dark Energy
• Singularity-free cosmological solutions of the superstring effective action
• Dark energy cosmology from higher-order, string-inspired gravity and its reconstruction
• String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
• What is needed of a tachyon if it is to be the dark energy?
• Gauss-Bonnet Quintessence: Background Evolution, Large Scale Structure and Cosmological Constraints
• On the Construction of Nonsingular Pre-Big-Bang and Ekpyrotic Cosmologies and the Resulting Density Perturbations
• Instability of 1-loop superstring cosmology
• Dark energy and cosmological solutions in second-order string gravity
• A unified approach to scaling solutions in a general cosmological background
• Singularity-free cosmological solutions in quadratic gravity
• String-Inspired Higher-Curvature Terms and the Randall-Sundrum Scenario
• Cosmological Solutions of Higher-Curvature String Effective Theories with Dilatons
• Ghost conditions for Gauss-Bonnet cosmologies
• Inflation from Superstring/M Theory Compactification with Higher Order Corrections I
• On compatibility of string effective action with an accelerating universe
• Nonsingular Bianchi type I cosmological solutions from 1-loop superstring effective action

Cited by in corpus (30)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Accelerating cosmologies from non-local higher-derivative gravity
• Phantom and non-phantom dark energy: The cosmological relevance of non-locally corrected gravity
• Palatini versus metric formulation in higher curvature gravity
• Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters
• Dynamics in Nonlocal Cosmological Models Derived from String Field Theory
• One-loop effective action for non-local modified Gauss-Bonnet gravity in de Sitter space
• Interacting Ricci Dark Energy with Logarithmic Correction
• Cosmic acceleration with a negative cosmological constant in higher dimensions
• Gauss-Bonnet dark energy by Lagrange multipliers
• Reconstructing interacting entropy-corrected holographic scalar field models of dark energy in non-flat universe
• Asymptotically Flat Radiating Solutions in Third Order Lovelock Gravity
• Gauss-Bonnet Chameleon Mechanism of Dark Energy
• Static spherically symmetric star in Gauss-Bonnet gravity
• Restoring New Agegraphic Dark Energy in RS II Braneworld
• Homogeneous cosmologies in generalized modified gravity
• Galaxy Cluster Gas Mass Fraction and Hubble Parameter versus Redshift Constraints on Dark Energy
• Inflation with improved D3-brane potential and the fine tunings associated with the model
• String-inspired Teleparallel Cosmology
• On the superstrings-induced four-dimensional gravity, and its applications to cosmology
• Testing a Dilaton Gravity Model using Nucleosynthesis
• Interacting viscous entropy-corrected holographic scalar field models of dark energy with time-varying G in modified FRW cosmology
• Early and Late-time Cosmic Acceleration in Non-minimal Yang-Mills-$f(G)$ Gravity
• Spherically symmetric gravitational collapse of a dust cloud in third order Lovelock Gravity
• Spherically symmetric solutions of light Galileon
• De Sitter cosmology from Gauss-Bonnet dark energy with quantum effects
• On the quartic curvature gravity in the context of FRW cosmology
• Dark Energy and Matter in 4 Dimensions From an Empty Kaluza-Klein Spacetime
• Generalized modified gravity models: the stability issue
• Modified gravity from an entropy functional