Collapse of Small-Scale Density Perturbations during Preheating in Single Field Inflation

Abstract

After cosmic inflation and before the transition to radiation domination, the cosmic energy density may have been dominated during an extended period by an oscillating massive scalar condensate. We show that during this period, sub-Hubble scale perturbations are subject to a metric preheating instability in the narrow resonance regime. We analyze in detail both, quadratic and quartic potentials. The instability leads to the growth of density perturbations which in many cases become non-linear already before the beginning of a radiation dominated Universe. This is particularly the case when requiring a phenomenologically preferred low reheat temperature. These early structures may lead to the emission of gravitational waves and the production of primordial black holes. Furthermore, it is not clear if they could modify the prediction of linear curvature perturbations on very large scales.

12 pages, 7 figures

References in corpus (30)

• Towards the Theory of Reheating After Inflation
• New cosmological constraints on primordial black holes
• Inflation Dynamics and Reheating
• Inflationary Cosmology
• Big-Bang Nucleosynthesis and Gravitino
• Structure of Resonance in Preheating after Inflation
• Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
• Black Hole Relics and Inflation: Limits on Blue Perturbation Spectra
• Inflation after WMAP3: Confronting the Slow-Roll and Exact Power Spectra with CMB Data
• Higher order corrections to primordial spectra from cosmological inflation
• Cosmological parameter estimation and the inflationary cosmology
• The Density Perturbation Power Spectrum to Second-Order Corrections in the Slow-Roll Expansion
• Parametric Amplification of Gravitational Fluctuations During Reheating
• Quantum-to-classical Transition of Cosmological Perturbations for Non-vacuum Initial States
• The influence of cosmological transitions on the evolution of density perturbations
• Gravitino production by primordial black hole evaporation and constraints on the inhomogeneity of the early Universe
• WKB approximation for inflationary cosmological perturbations
• Inflationary Perturbations: the Cosmological Schwinger Effect
• Inflationary Cosmological Perturbations of Quantum-Mechanical Origin
• Supersymmetry and primordial black hole abundance constraints
• Preheating in an Expanding Universe: Analytic Results for the Massless Case
• Brane inflation and the WMAP data: a Bayesian analysis
• Evolution of cosmological perturbations in a stage dominated by an oscillatory scalar field
• Evolution of Cosmological Perturbation in Reheating Phase of the Universe
• Resonance Structure for Preheating with Massless Fields
• Evolution of Cosmological Perturbations during Reheating
• Moduli constraints on primordial black holes
• Constraints on Kinetically Modified Inflation from WMAP5
• A Re-analysis of Gravitino Dark Matter in the Constrained MSSM
• Roles of a coherent scalar field on the evolution of cosmic structures

Cited by in corpus (70)

• Encyclopaedia Inflationaris
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• Cosmology with the Laser Interferometer Space Antenna
• Universal infrared scaling of gravitational wave background spectra
• Gravitational Wave Production right after a Primordial Black Hole Evaporation
• Reheating Effects in the Matter Power Spectrum and Implications for Substructure
• Enhancement of Gravitational Waves Induced by Scalar Perturbations due to a Sudden Transition from an Early Matter Era to the Radiation Era
• PBH Dark Matter in Supergravity Inflation Models
• Primordial black holes from the preheating instability
• Cosmological Inflation and the Quantum Measurement Problem
• Inflaton Fragmentation and Oscillon Formation in Three Dimensions
• Gravitational Waves Induced by Scalar Perturbations during a Gradual Transition from an Early Matter Era to the Radiation Era
• Limits on primordial black holes from $\mu$ distortions in cosmic microwave background
• Scalaron the mighty: producing dark matter and baryon asymmetry at reheating
• The Dark Matter Annihilation Boost from Low-Temperature Reheating
• Primordial Black Holes
• Delayed Reheating and the Breakdown of Coherent Oscillations
• Metric preheating and radiative decay in single-field inflation
• Lighting the Dark: The Evolution of the Post-Inflationary Universe
• Evaporation of Primordial Black Holes in the Early Universe: Mass and Spin Distributions
• Boltzmann or Bogoliubov? Approaches Compared in Gravitational Particle Production
• Freeze-in from Preheating
• Scalar Dark Matter Production from Preheating and Structure Formation Constraints
• Preheating in Full General Relativity
• Unification models with reheating via primordial black holes
• Primordial Black Holes With Multi-Modal Mass Spectra
• Breaking a dark degeneracy: The gamma-ray signature of early matter domination
• Constraining chameleon field driven warm inflation with Planck 2018 data
• Moduli Stars
• Gravitational Collapse in the Post-Inflationary Universe
• Non-Abelian gauge preheating
• Real-space entanglement in the Cosmic Microwave Background
• Reheating constraints in inflationary magnetogenesis
• Formation of inflaton halos after inflation
• Collapse threshold for a cosmological Klein Gordon field
• Inflaton Clusters and Inflaton Stars
• Constraining Nonthermal Dark Matter's Impact on the Matter Power Spectrum
• Magnetogenesis during inflation and preheating in the Starobinsky model
• Smallest Remnants of Early Matter Domination
• Numerical evaluation of the three-point scalar-tensor cross-correlations and the tensor bi-spectrum
• Gauge preheating with full general relativity
• Dark Matter Microhalos in the Solar Neighborhood: Pulsar Timing Signatures of Early Matter Domination
• No quasi-stable scalaron lump forms after $R^2$ inflation
• Oscillon formation from preheating in asymmetric inflationary potentials
• Axion Poltergeist
• Stochastic Gravitational Waves from Post-inflationary Structure Formation
• The scalar bi-spectrum during preheating in single field inflationary models
• Gravitational dynamics in Higgs inflation: Preinflation and preheating with an auxiliary field
• Running primordial perturbations: Inflationary Dynamics and Observational Constraints
• Opening the reheating box in multifield inflation
• Complex Scalar Field Reheating and Primordial Black Hole production
• Inflaton decay and reheating in nonminimal derivative coupling
• Characterizing the post-inflationary reheating history, Part II: Multiple interacting daughter fields
• Primordial black holes as cosmic expansion accelerators
• Reheating mechanism of Curvaton with Nonminimal Derivative Coupling to Gravity
• Black hole formation from the gravitational collapse of a non-spherical network of structures
• More on loops in reheating: Non-gaussianities and tensor power spectrum
• Gravothermalizing into primordial black holes, boson stars, and cannibal stars
• Post-inflationary structure formation boosted by parametric self-resonance
• On the breakdown of the curvature perturbation ζ during reheating
• Revisiting primordial black holes formation from preheating instabilities: the case of Starobinsky inflation
• A narrow-band parameterization for the stochastic gravitational wave background
• Potential Surge Preheating: enhanced resonance from potential features
• Gravitational waves from primordial black hole dominance: The effect of inflaton decay rate
• Unifying inflationary and reheating solution
• Self-resonance during preheating: The case of $\alpha$-attractor models
• Primordial black hole driven cosmic acceleration
• Numerical simulations of primordial black hole formation via delayed first-order phase transitions
• Hidden regimes during preheating
• Bispectrum of induced gravitational waves in the poltergeist mechanism