Primordial Black Holes from Pre-Big Bang inflation

Abstract

We discuss the possibility of producing a significant fraction of dark matter in the form of primordial black holes in the context of the pre-big bang inflationary scenario. We take into account, to this purpose, the enhancement of curvature perturbations possibly induced by a variation of the sound-speed parameter $c_s$ during the string phase of high-curvature inflation. After imposing all relevant observational constraints, we find that the considered class of models is compatible with the production of a large amount of primordial black holes in the mass range relevant to dark matter, provided the sound-speed parameter is confined in a rather narrow range of values, $0.003<c_s<0.01$.

arXiv comment26 pages, two figures. Many new references and a few comments added. Version accepted for publication in JCAP

References in corpus (61)

• Generating the curvature perturbation without an inflaton
• New cosmological constraints on primordial black holes
• Primordial Black Holes as Dark Matter
• Pre-Big-Bang in String Cosmology
• The Pre-Big Bang Scenario in String Cosmology
• Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -
• The primordial density perturbation in the curvaton scenario
• Primordial Black Holes
• Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run
• Towards a non-singular pre-big bang cosmology
• The abundance of primordial black holes depends on the shape of the inflationary power spectrum
• Revisiting constraints on asteroid-mass primordial black holes as dark matter candidates
• Dilaton Production in String Cosmology
• Signatures of primordial black hole dark matter
• Clusters of primordial black holes
• Primordial Black Holes from a tiny bump/dip in the Inflaton potential
• Updated Constraints on Asteroid-Mass Primordial Black Holes as Dark Matter
• Instability of 1-loop superstring cosmology
• Primordial Black Holes from Sound Speed Resonance during Inflation
• Mechanisms for Primordial Black Hole Production in String Theory
• Metric Perturbations in Dilaton-Driven Inflation
• Vacuum fluctuations in axion-dilaton cosmologies
• Adiabatic perturbations in pre big bang models: matching conditions and scale invariance
• Primordial Black Holes from String Inflation
• Primordial black holes and gravitational waves from parametric amplification of curvature perturbations
• When Primordial Black Holes from Sound Speed Resonance Meet a Stochastic Background of Gravitational Waves
• Non-linear statistics of primordial black holes from gaussian curvature perturbations
• Primordial black holes as dark matter and gravitational waves from single-field polynomial inflation
• Duality Invariant Cosmology to all Orders in ${\alpha }^{\prime }$
• Primordial black holes from sound speed resonance in the inflaton-curvaton mixed scenario
• Perturbations in a non-singular bouncing Universe
• Black hole formation from a general quadratic action for inflationary primordial fluctuations
• Non-Canonical Inflation and Primordial Black Holes Production
• Peak and end point of the relic graviton background in string cosmology
• A covariant and gauge invariant formulation of the cosmological "backreaction"
• Cosmological perturbations across a curvature bounce
• Gauge invariant averages for the cosmological backreaction
• Tensor perturbations in high-curvature string backgrounds
• S-duality Invariant Perturbations in String Cosmology
• Quantum Inhomogeneities in String Cosmology
• Assisting pre-big bang phenomenology through short-lived axions
• O$(d,d)$ covariant String Cosmology to all orders in ${\alpha }^{\prime }$
• Detuning primordial black hole dark matter with early matter domination and axion monodromy
• Black hole formation in a contracting universe
• Non-singular string cosmology via ${\alpha }^{\prime }$ corrections
• The effect of varying sound velocity on primordial curvature perturbations
• Cosmological Backreaction for a Test Field Observer in a Chaotic Inflationary Model
• Back-Reaction of Super-Hubble Cosmological Perturbations Beyond Perturbation Theory
• Extreme scenarios: the tightest possible constraints on the power spectrum due to primordial black holes
• Constraints on pre-big bang parameter space from CMBR anisotropies
• Black holes and gravitational waves in string cosmology
• Backreaction during inflation: a physical gauge invariant formulation
• Observable gravitational waves in pre-big bang cosmology: an update
• Tracing Primordial Black Holes in Nonsingular Bouncing Cosmology
• The cosmological backreaction: gauge (in)dependence, observers and scalars
• Generation of Primordial Black Holes and Gravitational Waves from Dilaton-Gauge Field Dynamics
• Pitfalls of a power-law parameterization of the primordial power spectrum for Primordial Black Hole formation
• Constraints on the production of primordial magnetic seeds in pre-big bang cosmology
• On Stochastic Effects and Primordial Black-Hole Formation
• On the initial regime of pre-big bang cosmology
• A diagrammatic approach to the spectrum of cosmological perturbations

Cited by in corpus (6)

• Small scale induced gravitational waves from primordial black holes, a stringent lower mass bound, and the imprints of an early matter to radiation transition
• Enhance Primordial Black Hole Abundance through the Non-linear Processes around Bounce Point
• Gravitational-wave background in bouncing models from semi-classical, quantum and string gravity
• Constraints on the Pre-Big Bang scenario from a cosmological interpretation of the NANOGrav data
• Planck isocurvature constraint on primordial black holes lighter than a kiloton
• A simple example of "non-minimal" Pre-Big Bang scenario