Non-Canonical Inflation and Primordial Black Holes Production

Abstract

We study a mechanism for the amplification of the inflationary scalar perturbation when the inflaton field action is non-canonical, i.e. the inflaton kinetic term has a non-standard form. For such a case the speed of sound of the perturbations generated during inflation is less than one and in general changes with time. Furthermore in such models, even when the scalar field potential is negligible, diverse inflationary attractors may exist. The possible effects of a speed of sound approaching zero during some stage of inflation may lead to a large amplification for the amplitude of the scalar spectrum which, on horizon re-entry during the radiation dominated phase, can collapse and form primordial black holes (PBH) of a mass $M_{\mathrm{BH}}\sim 10^{-15}{M}_{\odot }$ which may constitute a large fraction of the total Dark Matter (DM) today.

14 pages, 1 figure. References added. Final version published on PLB

References in corpus (16)

• Non-Gaussian features of primordial fluctuations in single field inflationary models
• k-Inflation
• Non-Gaussianity from Inflation: Theory and Observations
• Nonperturbative Evolution Equation for Quantum Gravity
• Perturbations in k-inflation
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -
• Primordial Black Holes
• Primordial black holes from single field models of inflation
• Primordial black hole dark matter from single field inflation
• Primordial Black Holes and Slow-Roll Violation
• Primordial Black Holes from Inflation and non-Gaussianity
• Primordial Black Holes from String Inflation
• Attractive Lagrangians for Noncanonical Inflation
• Non-Gaussianity in single field models without slow-roll
• Relations between canonical and non-canonical inflation

Cited by in corpus (65)

• Generating PBHs and small-scale GWs in two-field models of inflation
• Inflation and Primordial Black Holes
• Primordial Black Holes from Inflation with Nonminimal Derivative Coupling
• Primordial black holes and secondary gravitational waves from k/G inflation
• PBH in single field inflation: the effect of shape dispersion and non-Gaussianities
• Primordial black holes from sound speed resonance in the inflaton-curvaton mixed scenario
• Scalar induced gravitational waves in inflation with gravitationally enhanced friction
• Primordial black holes dark matter from inflection point models of inflation and the effects of reheating
• Primordial black holes and secondary gravitational waves from inflationary model with a non-canonical kinetic term
• Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field
• Scalar induced gravitational waves in light of Pulsar Timing Array data
• Constraints on primordial curvature power spectrum with pulsar timing arrays
• Primordial black holes from single-field inflation: a fine-tuning audit
• Primordial black holes and oscillating gravitational waves in slow-roll and slow-climb inflation with an intermediate non-inflationary phase
• Primordial black holes and secondary gravitational waves from natural inflation
• Dirac-Born-Infeld realization of sound speed resonance mechanism for primordial black holes
• Primordial black holes and secondary gravitational waves from the Higgs field
• Primordial black holes from null energy condition violation during inflation
• Primordial black holes and induced gravitational waves in $k$-inflation
• Primordial black holes and gravitational waves from non-canonical inflation
• Primordial black holes in nonminimal derivative coupling inflation with quartic potential and reheating consideration
• Constraints on primordial curvature spectrum from primordial black holes and scalar-induced gravitational waves
• Non-Gaussianity and Secondary Gravitational Waves from Primordial Black Holes Production in $\alpha$-attractor Inflation
• Small scale induced gravitational waves from primordial black holes, a stringent lower mass bound, and the imprints of an early matter to radiation transition
• Primordial black holes and scalar-induced gravitational waves from the generalized Brans-Dicke theory
• Model-independent reconstruction of the primordial curvature power spectrum from PTA data
• Primordial black holes formation in the inflationary model with field-dependent kinetic term for quartic and natural potentials
• Primordial black holes and secondary gravitational waves from chaotic inflation
• Ultra-low mass PBHs in the early universe can explain the PTA signal
• Primordial black holes ensued from exponential potential and coupling parameter in nonminimal derivative inflation model
• NANOGrav signal and LIGO-Virgo Primordial Black Holes from the Higgs field
• Primordial black holes in non-canonical scalar field inflation driven by quartic potential in the presence of bump
• Primordial black holes and secondary gravitational waves from generalized power-law non-canonical inflation with quartic potential
• Gauge transformation of scalar induced tensor perturbation during matter domination
• Could PBHs and secondary GWs have originated from squeezed initial states?
• Mechanism of primordial black holes production and secondary gravitational waves in $\alpha$-attractor Galileon inflationary scenario
• Primordial Non-Gaussianity from G-inflation
• Primordial black holes formation and secondary gravitational waves in nonminimal derivative coupling inflation
• Primordial black holes from a curvaton scenario with strongly non-Gaussian perturbations
• Primordial black holes from an inflationary potential valley
• Inflation with $0\le c_{\mathrm{s}}\le 1$
• Primordial black holes in scalar field inflation coupled to the Gauss-Bonnet term with fractional power-law potentials
• The primordial black hole from running curvaton
• Primordial black holes generated by fast-roll mechanism in non-canonical natural inflation
• Primordial Black Hole Formation in Non-Standard Post-Inflationary Epochs
• Inflation with non-canonical scalar fields revisited
• Growth of power spectrum due to decrease of sound speed during inflation
• Resonant amplification of curvature perturbations in inflation model with periodical derivative coupling
• Quantum Cosmology and the Inflationary Spectra from a Non-Minimally Coupled Inflaton
• Primordial black holes in non-minimal Gauss-Bonnet inflation in light of the PTA data
• Primordial Black Holes from Pre-Big Bang inflation
• Reconstruction methods and the amplification of the inflationary spectrum
• DBI Inflation and Warped Black Holes
• Primordial perturbations and inflation in holographic cosmology
• Primordial black holes in SB SUSY Gauss-Bonnet inflation
• Hamilton-Jacobi formalism for k-inflation
• Constraining inflation with nonminimal derivative coupling with the Parkes Pulsar Timing Array third data release
• Primordial Black Holes in Induced Gravity Inflationary Models with Two Scalar Fields
• Probing the equation of state of neutron stars with captured primordial black holes
• Primordial black holes formation in inflationary $F(R)$ models with scalar fields
• Primordial black holes and induced gravitational waves from localized features in DBI inflation
• Primordial black holes and scalar induced gravitational waves from sound speed resonance in non-minimal derivative coupling inflation model
• Primordial black hole formation in k-inflation models
• Reconstructing square-law k-inflation from Planck data
• Gravitational waves from resonant amplification of curvature perturbations during inflation