Gravitational wave signals and cosmological consequences of gravitational reheating

Abstract

Reheating after inflation can proceed even if the inflaton couples to Standard Model (SM) particles only gravitationally. However, particle production during the transition between de-Sitter expansion and a decelerating Universe is rather inefficient and the necessity to recover the visible Universe leads to a non-standard cosmological evolution initially dominated by remnants of the inflaton field. We remain agnostic to the specific dynamics of the inflaton field and discuss a generic scenario in which its remnants behave as a perfect fluid with a general barotropic parameter $w$. Using CMB and BBN constraints we derive the allowed range of inflationary scales. We also show that this scenario results in a characteristic primordial Gravitational Wave (GW) spectrum which gives hope for observation in upcoming runs of LIGO as well as in other planned experiments.

arXiv comment17 pages, 6 figures

References in corpus (53)

• Planck 2015 results. XIII. Cosmological parameters
• Advanced LIGO
• Towards the Theory of Reheating After Inflation
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• k-Inflation
• Reheating after Inflation
• Higgs mass and vacuum stability in the Standard Model at NNLO
• Perturbations in k-inflation
• Investigating the near-criticality of the Higgs boson
• Big Bang Nucleosynthesis: 2015
• Superconformal Inflationary $\alpha$-Attractors
• BICEP2 / Keck Array VI: Improved Constraints On Cosmology and Foregrounds When Adding 95 GHz Data From Keck Array
• Quintessential inflation
• How long before the end of inflation were observable perturbations produced?
• MeV-scale Reheating Temperature and Thermalization of Neutrino Background
• Sensitivity curves for searches for gravitational-wave backgrounds
• Detector configuration of DECIGO/BBO and identification of cosmological neutron-star binaries
• G-inflation: inflation driven by the Galileon field
• Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves
• Cosmological Constraints on Late-time Entropy Production
• GW150914: Implications for the stochastic gravitational wave background from binary black holes
• Instant Preheating
• First CMB Constraints on the Inflationary Reheating Temperature
• Particle physics models of inflation and curvaton scenarios
• Placing limits on the stochastic gravitational-wave background using European Pulsar Timing Array data
• Tensor Perturbations in Inflationary Models as a Probe of Cosmology
• A new cosmic microwave background constraint to primordial gravitational waves
• Gravitational-wave cosmology across 29 decades in frequency
• Gravitational wave, collider and dark matter signals from a scalar singlet electroweak baryogenesis
• Preserving Flat Directions During Inflation
• The Equation of State and Duration to Radiation Domination After Inflation
• Gravitational Particle Production in Oscillating Background and Its Cosmological Implications
• Cosmic Archaeology with Gravitational Waves from Cosmic Strings
• Turning Around the Sphaleron Bound: Electroweak Baryogenesis in an Alternative Post-inflationary Cosmology
• Electroweak Vacuum (In)Stability in an Inflationary Universe
• Blue-tilted Tensor Spectrum and Thermal History of the Universe
• Probable or Improbable Universe? Correlating Electroweak Vacuum Instability with the Scale of Inflation
• Complex scalar field dark matter on galactic scales
• Kination Dominated Reheating and Cold Dark Matter Abundance
• Lectures on inflation and cosmological perturbations
• Starobinsky-like inflation from induced gravity
• The double attractor behavior of induced inflation
• Gravitational wave and collider implications of electroweak baryogenesis aided by non-standard cosmology
• Higgs condensation as an unwanted curvaton
• New Constraints on Dark Matter Production during Kination
• Reheating constraints in quintessential inflation
• Quintessential inflation at low reheating temperatures
• Self-reproduction in k-inflation
• Enabling Electroweak Baryogenesis through Dark Matter
• Endlessly flat scalar potentials and $\alpha$-attractors
• Initial conditions for inflation
• Gravitational inflaton decay and the hierarchy problem
• How scalar-field dark matter may conspire to facilitate baryogenesis at the electroweak scale

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• Gravitational waves from global cosmic strings in quintessential inflation
• Inconsistency of an inflationary sector coupled only to Einstein gravity
• Exploring the Spectral Shape of Gravitational Waves Induced by Primordial Scalar Perturbations and Connection with the Primordial Black Hole Scenarios
• On Inflationary Scale, Reheating Scale and Pre-BBN Cosmology with Scalar Fields
• Measuring Inflaton Couplings via Primordial Gravitational Waves
• Minimal $k$-inflation in light of the conformal metric-affine geometry
• Reheating through the Higgs amplified by spinodal instabilities and gravitational creation of gravitons
• Gravitational reheating and superheavy Dark Matter creation after inflation with non-minimal coupling
• Baryogenesis in the paradigm of quintessential inflation
• Emergent dark energy from unparticles
• Observable Gravitational Waves from Hyperkination in Palatini Gravity and Beyond
• CMB signature of non-thermal Dark Matter produced from self-interacting dark sector
• Observable Primordial Gravitational Waves from Non-minimally Coupled $R^2$ Palatini Modified Gravity
• Curved spacetime effective field theory (cEFT) -- construction with the heat kernel method
• Primordial Gravitational Waves as Probe of Dark Matter in Interferometer Missions: Fisher Forecast and MCMC
• Constraining the history of reheating with the NANOGrav 15-year data
• Canonical Scalar Field Inflation with a Woods-Saxon Potential
• A universal bound on the duration of a kination era
• More on Emergent Dark Energy from Unparticles
• Inflation in supergravity from field redefinitions
• Gravitational waves from a curvature-induced phase transition of a Higgs-portal dark matter sector
• Hill-climbing dark inflation
• Kination cosmology from scalar fields and gravitational-wave signatures