Primordial black holes and scalar induced gravitational waves from the model with a Gauss-Bonnet term
arXiv:2112.10516 · doi:10.1103/PhysRevD.105.063539
Abstract
We study an inflationary model with the Gauss-Bonnet coupling, which can enhance the curvature perturbation at small scales and thus produce a significant abundance of primordial black holes (PBHs) and detectable scalar induced gravitational waves (SIGWs). PBHs from the model with mass , , and can explain the LIGO-Virgo events, the ultrashort-timescale microlensing events in the OGLE data, and all dark matter, respectively. SIGWs produced by the model can account for the recent NANOGrav signal. We also compute the primordial non-Gaussianity and discuss its impact on PBHs and SIGWs. The probability distribution of density contrast is modified to be right-tailed, which we find prompts the formation of PBHs, so that the abundance of PBHs is underestimated with Gaussian approximation. On the contrary, the fractional energy density of SIGWs is hardly affected.
26 pages,5 figures
References in corpus (34)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Advanced LIGO
- GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
- GW190814: Gravitational Waves from the Coalescence of a 23 M Black Hole with a 2.6 M Compact Object
- Laser Interferometer Space Antenna
- GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
- Primordial Black Holes as Dark Matter
- BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
- Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
- Gravitational-wave sensitivity curves
- Cosmic microwave background limits on accreting primordial black holes
- The merger rate of primordial-black-hole binaries
- Constraints on Earth-mass primordial black holes from OGLE 5-year microlensing events
- No large population of unbound or wide-orbit Jupiter-mass planets
- Primordial Black Holes and Slow-Roll Violation
- CMB bounds on disk-accreting massive Primordial Black Holes
- Stochastic gravitational waves associated with the formation of primordial black holes
- Generating PBHs and small-scale GWs in two-field models of inflation
- Bouncing cosmology in modified Gauss-Bonnet gravity
- Induced gravitational waves as a probe of thermal history of the universe
- Limits on f_NL parameters from WMAP 3yr data
- Scale-dependent non-Gaussianity probes inflationary physics
- The "in-in" Formalism and Cosmological Perturbations
- Primordial non-Gaussianities in general modified gravitational models of inflation
- Perturbation, Non-Gaussianity and Reheating in a GB--Attractor Model
- 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
- A note on the role of the boundary terms for the non-Gaussianity in general k-inflation
- Bounce universe from string-inspired Gauss-Bonnet gravity
- Non-Minimally Coupled Einstein Gauss Bonnet Inflation Phenomenology in View of GW170817
- Double-peaked inflation model: Scalar induced gravitational waves and primordial-black-hole suppression from primordial non-Gaussianity
- Generalization of cosmological attractor approach to Einstein-Gauss-Bonnet gravity
- Gauge invariance and non-Gaussianity in Inflation
- Primordial Non-Gaussianity from G-inflation