Cosmological constraints on the curvaton web parameters
arXiv:1212.6529 · doi:10.1103/PhysRevD.88.023521
Abstract
We consider the mixed inflaton-curvaton scenario in which quantum fluctuations of the curvaton field during inflation lead to a relatively large curvature perturbation spectrum at small scales. We use the model of chaotic inflation with quadratic potential including supergravity corrections leading to a large positive tilt in the power spectrum of the curvaton field. The model is characterized by the strongly inhomogeneous curvaton field in the Universe and large non-Gaussianity of curvature perturbations at small scales. We obtained the constraints on the model parameters considering the process of primordial black hole (PBH) production in radiation era.
v2: 11 pages, 5 figures. Extended version accepted by Phys. Rev. D
References in corpus (14)
- New models of chaotic inflation in supergravity
- General inflaton potentials in supergravity
- Generalised constraints on the curvature perturbation from primordial black holes
- Gauge field production in SUGRA inflation: local non-Gaussianity and primordial black holes
- Primordial black hole formation from an axion-like curvaton model
- Constraints on the induced gravitational wave background from primordial black holes
- Primordial Black Holes from the inflating curvaton
- Black hole formation and slow-roll inflation
- Non-gaussianity and cosmic uncertainty in curvaton-type models
- Axion isocurvature fluctuations with extremely blue spectrum
- Primordial black hole constraints for curvaton models with predicted large non-Gaussianity
- Correlated isocurvature perturbations from mixed inflaton-curvaton decay
- Constraints on amplitudes of curvature perturbations from primordial black holes
- Hilltop Curvatons
Cited by in corpus (11)
- Calculating the mass spectrum of primordial black holes
- Primordial black holes in non-Gaussian regimes
- Primordial Black Holes from the inflating curvaton
- Axion inflation with gauge field production and primordial black holes
- Primordial black hole constraints for curvaton models with predicted large non-Gaussianity
- Can massive primordial black holes be produced in mild waterfall hybrid inflation?
- The long-short wavelength mode coupling tightens primordial black hole constraints
- Clustering of primordial black holes formed in a matter-dominated epoch
- Observational Constraints on the Primordial Curvature Power Spectrum
- Stochastic Effects in Axion Inflation and Primordial Black Holes Formation
- An Analytic Treatment of Underdamped Axionic Blue Isocurvature Perturbations