Generalized Horndeski-Like Einstein Gauss-Bonnet Inflation with Massless Primordial Gravitons
arXiv:2108.10841 · doi:10.1016/j.nuclphysb.2021.115522
Abstract
In this work we shall introduce a theoretical framework comprised by a non-minimal coupled canonical scalar field, a non-minimal coupling to the Gauss-Bonnet invariant and a non-minimal kinetic coupling. This theoretical framework is basically a non-minimally coupled Einstein-Gauss-Bonnet theory with extra corrections of the form of a non-minimal kinetic coupling. In order to comply with the GW170817 event, we shall impose a constraint on the propagation speed of the primordial tensor perturbations that it is equal to that of light's in vacuum, and this constraint basically specifies the way that the scalar potential and the non-minimal couplings of the theory can be chosen. The whole theoretical framework, which belongs to the larger class of Horndeski theories, cannot yield viable results, due to the fact that the primordial gravitational wave speed is not equal to that of light's. Thus we study this theory by also imposing the constraint of having gravity wave speed equal to the light speed. We directly examine the inflationary phenomenology of our theoretical framework and by assuming the slow-roll conditions, we derived the equations of motion in such a way so that analytical results may be extracted. By using several well motivated models we demonstrate the framework leads to a viable phenomenology.
arXiv commentNPB accepted
References in corpus (61)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Multi-messenger Observations of a Binary Neutron Star Merger
- Modified Gauss-Bonnet theory as gravitational alternative for dark energy
- Dark Energy after GW170817: dead ends and the road ahead
- Strong constraints on cosmological gravity from GW170817 and GRB 170817A
- Dark Energy after GW170817 and GRB170817A
- Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
- Gauss-Bonnet dark energy
- Dilatonic Black Holes in Higher Curvature String Gravity
- Imperfect Dark Energy from Kinetic Gravity Braiding
- Horndeski theory and beyond: a review
- Exploring gravitational theories beyond Horndeski
- Singularity-free cosmological solutions of the superstring effective action
- Dark energy cosmology from higher-order, string-inspired gravity and its reconstruction
- Degenerate higher order scalar-tensor theories beyond Horndeski up to cubic order
- New Model of Inflation with Non-minimal Derivative Coupling of Standard Model Higgs Boson to Gravity
- String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
- Exact cosmological solutions with nonminimal derivative coupling
- Cosmological inflation in gravity
- Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyon: Unified analyses
- Disformal invariance of second order tensor-scalar theories: framing the Horndeski action
- Quintessence and phantom cosmology with non-minimal derivative coupling
- Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
- Instability of 1-loop superstring cosmology
- Swampland Implications of GW170817-compatible Einstein-Gauss-Bonnet Gravity
- Dilatonic Black Holes in Higher-Curvature String Gravity II: Linear Stability
- A formal introduction to Horndeski and Galileon theories and their generalizations
- Singularity-free cosmological solutions in quadratic gravity
- Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem
- Slow-roll inflation with a Gauss-Bonnet correction
- Effective theory for the Vainshtein mechanism from the Horndeski action
- Gauss-Bonnet Inflation
- Primordial Black Holes from Inflation with Nonminimal Derivative Coupling
- Horndeski: beyond, or not beyond?
- Solutions in the scalar-tensor theory with nonminimal derivative coupling
- One-Loop Superstring Cosmology and the Non-Singular Universe
- Power spectra from an inflaton coupled to the Gauss-Bonnet term
- Viable Inflation in Scalar-Gauss-Bonnet Gravity and Reconstruction from Observational Indices
- Inflation coupled to a Gauss-Bonnet term
- Linear perturbations in Galileon gravity models
- Perturbation, Non-Gaussianity and Reheating in a GB--Attractor Model
- Inflation with Gauss-Bonnet coupling
- When scalar field is kinetically coupled to the Einstein tensor
- General Non-minimal Kinetic coupling to gravity
- Hamiltonian structure of scalar-tensor theories beyond Horndeski
- Neutron stars in Horndeski gravity
- The parameter space in Galileon gravity models
- Inflationary Phenomenology of Einstein Gauss-Bonnet Gravity Compatible with GW170817
- Realistic cosmological scenario with non-minimal kinetic coupling
- Purely Kinetic Coupled Gravity
- Non-Minimally Coupled Einstein Gauss Bonnet Inflation Phenomenology in View of GW170817
- Non-minimal Kinetic coupling to gravity and accelerated expansion
- On the Existence of Solutions with a Horizon in Pure Scalar-Gauss-Bonnet Theories
- Reheating in Gauss-Bonnet-coupled inflation
- Cosmology with nonminimal kinetic coupling and a power-law potential
- Accelerating Universes in String Theory via Field Redefinition
- Classification of the Horndeski cosmologies via Noether Symmetries
- Anisotropy screening in Horndeski cosmologies
- Gauss-Bonnet-coupled Quintessential Inflation
- General dynamical properties of cosmological models with nonminimal kinetic coupling
- Rectifying Einstein-Gauss-Bonnet Inflation in View of GW170817