Perturbation, Non-Gaussianity and Reheating in a GB-$\alpha$-Attractor Model

Abstract

Motivated by $\alpha$-attractor models, in this paper we consider a Gauss-Bonnet inflation with E-model type of potential. We consider the Gauss-Bonnet coupling function to be the same as the E-model potential. In the small $\alpha$ limit we obtain an attractor at $r=0$ as expected, and in the large $\alpha$ limit we recover the Gauss-Bonnet model with potential and coupling function of the form ${\varphi }^{2n}$. We study perturbations and non-Gaussianity in this setup and we find some constraints on the model's parameters in comparison with PLANCK datasets. We study also the reheating epoch after inflation in this setup. For this purpose, we seek the number of e-folds and temperature during reheating epoch. These quantities depend on the model's parameter and the effective equation of state of the dominating energy density in the reheating era. We find some observational constraints on these parameters.

arXiv comment12 pages, 4 figures, Revised version, to appear in PRD

References in corpus (69)

• Planck 2015 results. XIII. Cosmological parameters
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Towards the Theory of Reheating After Inflation
• Reheating after Inflation
• Non-Gaussianity from Inflation: Theory and Observations
• The Effective Field Theory of Inflation
• Acoustic Signatures in the Primary Microwave Background Bispectrum
• Reconstructing the Inflaton Potential --- an Overview
• Gauss-Bonnet dark energy
• Universality Class in Conformal Inflation
• Superconformal Inflationary $\alpha$-Attractors
• Primordial Non-Gaussianities from Inflation Models
• Dynamics of Symmetry Breaking and Tachyonic Preheating
• Planck 2015 results. XVII. Constraints on primordial non-Gaussianity
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• The Three--Point Correlation Function of the Cosmic Microwave Background in Inflationary Models
• The shape of non-Gaussianities
• Minimal Supergravity Models of Inflation
• Primordial non-gaussianities in single field inflation
• Non-Gaussianities in Single Field Inflation and their Optimal Limits from the WMAP 5-year Data
• Limits on non-Gaussianities from WMAP data
• Instant Preheating
• Tachyonic Instability and Dynamics of Spontaneous Symmetry Breaking
• Reheating constraints to inflationary models
• Reheating predictions in single field inflation
• Equation of state and Beginning of Thermalization After Preheating
• Preheating with Trilinear Interactions: Tachyonic Resonance
• Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
• Multifield Inflation after Planck: The Case for Nonminimal Couplings
• Equation-of-State Parameter for Reheating
• The Cosmic Microwave Background Bispectrum and Inflation
• Multi-field Conformal Cosmological Attractors
• Large Field Inflation and Double $\alpha$-Attractors
• Inflationary non-Gaussianities in the most general second-order scalar-tensor theories
• Primordial fluctuations and non-Gaussianities in multi-field DBI inflation
• Cosmological Attractors and Initial Conditions for Inflation
• Dark energy from modified F(R)-scalar-Gauss-Bonnet gravity
• Slow-roll inflation with a Gauss-Bonnet correction
• Inflaton Decay and Heavy Particle Production with Negative Coupling
• Higher Curvature Corrections to Primordial Fluctuations in Slow-roll Inflation
• Power spectra from an inflaton coupled to the Gauss-Bonnet term
• Single-field $\alpha$-attractors
• Constraints on α-attractor inflation and reheating
• Primordial non-Gaussianities in general modified gravitational models of inflation
• Accelerating Cosmologies in the Einstein-Gauss-Bonnet Theory with Dilaton
• Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum
• Cosmological Attractor Models and Higher Curvature Supergravity
• Inflationary $\alpha$-attractors from $F(R)$ Gravity
• No-Go Theorem for Gauss-Bonnet Inflation without Inflaton Potential
• Multi-field DBI inflation: introducing bulk forms and revisiting the gravitational wave constraints
• The double attractor behavior of induced inflation
• Reheating phase diagram for single-field slow-roll inflationary models
• Some Aspects of Tachyon Field Cosmology
• Realizing Scale-invariant Density Perturbations in Low-energy Effective String Theory
• Tachyonic Resonance Preheating in Expanding Universe
• Braneworld non-minimal inflation with induced gravity
• Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem
• DBI inflation with a non-minimally coupled Gauss-Bonnet term
• Sneutrino Inflation with $\alpha$-attractors
• Solutions of Higher Dimensional Gauss-Bonnet FRW Cosmology
• Non-Gaussian inflationary shapes in $G^3$ theories beyond Horndeski
• Gauss-Bonnet Cosmology with Induced Gravity and Non-Minimally Coupled Scalar Field on the Brane
• Holographic Dark Energy from a Modified GBIG Scenario
• Modified GBIG Scenario as an Alternative for Dark Energy
• A Braneworld Dark Energy Model with Induced Gravity and the Gauss-Bonnet Effect
• Large Non-Gaussianity in Non-Minimally Coupled Derivative Inflation with Gauss-Bonnet Correction
• Non-Minimal Braneworld Inflation after the Planck
• Brane world cosmology with Gauss-Bonnet and induced gravity terms
• More on the dilatonic Einstein-Gauss-Bonnet gravity

Cited by in corpus (66)

• Recent Advances on Inflation
• Swampland Implications of GW170817-compatible Einstein-Gauss-Bonnet Gravity
• Unifying of Inflation with Early and Late Dark Energy Epochs in Axion $F(R)$ Gravity
• Charged 4D Einstein-Gauss-Bonnet-AdS Black Holes: Shadow, Energy Emission, Deflection Angle and Heat Engine
• Viable Inflation in Scalar-Gauss-Bonnet Gravity and Reconstruction from Observational Indices
• Parity breaking signatures from a Chern-Simons coupling during inflation: the case of non-Gaussian gravitational waves
• A Refined Einstein-Gauss-Bonnet Inflationary Theoretical Framework
• Inflation with Gauss-Bonnet coupling
• Inflationary Phenomenology of Einstein Gauss-Bonnet Gravity Compatible with GW170817
• Constraints on scalar-tensor theory of gravity by the recent observational results on gravitational waves
• CMB constraints on the inflaton couplings and reheating temperature in $\alpha$-attractor inflation
• Non-Minimally Coupled Einstein Gauss Bonnet Inflation Phenomenology in View of GW170817
• Inflation with a quartic potential in the framework of Einstein-Gauss-Bonnet gravity
• Viable Inflationary Models in a Ghost-free Gauss-Bonnet Theory of Gravity
• Primordial black holes and scalar induced gravitational waves from the $E$ model with a Gauss-Bonnet term
• Primordial Gravitational Waves Predictions for GW170817-compatible Einstein-Gauss-Bonnet Theory
• De Sitter solutions in Einstein-Gauss-Bonnet gravity
• Reviving non-Minimal Horndeski-like Theories after GW170817: Kinetic Coupling Corrected Einstein-Gauss-Bonnet Inflation
• Stability analysis of de Sitter solutions in models with the Gauss-Bonnet term
• Gauss-Bonnet Inflation after Planck2018
• $R^p$ Attractors Static Neutron Star Phenomenology
• Universal Inflationary Attractors Implications on Static Neutron Stars
• Construction of inflationary scenarios with the Gauss-Bonnet term and nonminimal coupling
• $\alpha$-Attractor and Reheating in a Model with Non-Canonical Scalar Fields
• Inflationary Attractors Predictions for Static Neutron Stars in the Mass-Gap Region
• Constraints on the Reheating Parameters after Gauss-Bonnet Inflation from the Primordial Gravitational Waves
• A Nearly Massless Graviton in Einstein-Gauss-Bonnet Inflation with Linear Coupling Implies Constant-roll for the Scalar Field
• Static Neutron Stars Perspective of Quadratic and Induced Inflationary Attractor Scalar-tensor Theories
• A Study of an Einstein Gauss-Bonnet Quintessential Inflationary Model
• Inflationary Dynamics and Swampland Criteria for Modified Gauss-Bonnet Gravity Compatible with GW170817
• Reconstruction of GR cosmological solutions in modified gravity theories
• Late-Time Cosmology of Scalar-Coupled $f(R,\mathcal{G})$ Gravity
• Bottom-Up Reconstruction of Viable GW170817 Compatible Einstein-Gauss-Bonnet Theories
• Preinflationary dynamics of $\alpha -$attractor in loop quantum cosmology
• Measuring the Inflaton Coupling in the CMB
• Power-Law $f(R)$ Gravity Corrected Canonical Scalar Field Inflation
• Canonical Scalar Field Inflation with String and $R^2$-Corrections
• Study of Goldstone Inflation in the domain of Einstein-Gauss-Bonnet gravity
• Observational Viability of an Inflation Model with E-Model non-Minimal Derivative Coupling
• Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation
• LiteBIRD and CMB-S4 Sensitivities to Reheating in Plateau Models of Inflation
• String-inspired Teleparallel Cosmology
• Revisiting pre-inflationary universe of family of $\alpha -$attractor in loop quantum cosmology
• Reheating and particle creation in unimodular f(R, T) gravity
• $k$-Inflation-corrected Einstein-Gauss-Bonnet Gravity with Massless Primordial Gravitons
• Generalized $R^p$-attractor Cosmology in the Jordan and Einstein Frames: New Type of Attractors and Revisiting Standard Jordan Frame $R^p$ Inflation
• Mimetic DBI Inflation in Confrontation with Planck2018 data
• Attractor Cosmology from non-minimally Coupled Gravity
• Swampland Criteria and Constraints on Inflation in a $f(R,T)$ Gravity Theory
• Connecting Cosmic Inflation to Particle Physics with LiteBIRD, CMB-S4, EUCLID and SKA
• Inflationary Dynamics of Mutated Hilltop Inflation in Einstein-Gauss-Bonnet Gravity Under New Slow-Roll Approximations with Generalised Reheating
• Inflationary Dynamics in Einstein-Gauss-Bonnet Gravity Using New Slow-Roll Approximations considering Generalised Reheating
• Inflation with Gauss-Bonnet and Chern-Simons higher-curvature-corrections in the view of GW170817
• Observational Status of Tachyon Natural Inflation and Reheating
• Viable Inflationary Evolution from Loop Quantum Cosmology Scalar-Tensor Theory
• Tachyon Mimetic Inflation as an Instabilities-Free Model
• Deviation from Slow-Roll Regime in the EGB Inflationary Models with $r\sim N_e^{-1}$
• Some Aspects of the Tachyon Inflation with Superpotential in Confrontation with Planck2018 Data
• Generalized Horndeski-Like Einstein Gauss-Bonnet Inflation with Massless Primordial Gravitons
• Lowering the self-coupling of the scalar field in a generalized Higgs inflation
• Cosmology in a model with Lagrange multiplier, and Gauss-Bonnet and non-minimal kinetic couplings
• Implications of pulsar timing arrays for Gauss-Bonnet Inflation
• Viable Intermediate Inflation in the Mimetic DBI Model
• String-inspired Gauss-Bonnet Gravity Inflation and ACT
• Beyond $f(\varphi )\mathcal{G}$: Gauss--Bonnet inflation with $\mu (\varphi ,X)$
• Reconstructing ACT-compatible and GW170817-compatible Einstein-Gauss-Bonnet Inflation from the Observational Indices