Observational Status of Tachyon Natural Inflation and Reheating
arXiv:1712.05120 · doi:10.1088/1475-7516/2018/05/044
Abstract
We study observational viability of Natural Inflation with a tachyon field as inflaton. By obtaining the main perturbation parameters in this model, we perform a numerical analysis on the parameter space of the model and in confrontation with and CL regions of Planck2015 data. By adopting a warped background geometry, we find some new constraints on the width of the potential in terms of its height and the warp factor. We show that the Tachyon Natural Inflation in the large width limit recovers the tachyon model with a potential which is consistent with Planck2015 observational data. Then we focus on the reheating era after inflation by treating the number of e-folds, temperature and the effective equation of state parameter in this era. Since it is likely that the value of the effective equation of state parameter during the reheating era to be in the range , we obtain some new constraints on the tensor to scalar ratio as well as the e-folds number and reheating temperature in this Tachyon Natural Inflation model.
arXiv comment19 pages, 6 figures, Accepted for publication in JCAP
References in corpus (49)
- Planck 2015 results. XIII. Cosmological parameters
- Non-Gaussian features of primordial fluctuations in single field inflationary models
- Towards the Theory of Reheating After Inflation
- Reheating after Inflation
- The Effective Field Theory of Inflation
- Tachyon Matter
- Accelerated expansion of the universe driven by tachyonic matter
- Reconstructing the Inflaton Potential --- an Overview
- Field Theory of Tachyon Matter
- Natural Inflation: Particle Physics Models, Power Law Spectra for Large Scale Structure, and Constraints from COBE
- Cosmological Evolution of the Rolling Tachyon
- Dynamics of Symmetry Breaking and Tachyonic Preheating
- Nonperturbative Dynamics Of Reheating After Inflation: A Review
- Supersymmetric World-volume Action for Non-BPS D-branes
- Tachyons, Scalar Fields and Cosmology
- Instant Preheating
- Tachyonic Instability and Dynamics of Spontaneous Symmetry Breaking
- Power-Law Inflation from the Rolling Tachyon
- Reheating constraints to inflationary models
- Prospects and Problems of Tachyon Matter Cosmology
- What is needed of a tachyon if it is to be the dark energy?
- Reheating predictions in single field inflation
- Aspects of Tachyonic Inflation with Exponential Potential
- Running Non-Gaussianities in DBI Inflation
- Preheating with Trilinear Interactions: Tachyonic Resonance
- Equation-of-State Parameter for Reheating
- Problems with Tachyon Inflation
- Inflationary non-Gaussianities in the most general second-order scalar-tensor theories
- Inflaton Decay and Heavy Particle Production with Negative Coupling
- Inflation and the Theory of Cosmological Perturbations
- Constraints on α-attractor inflation and reheating
- Primordial non-Gaussianities in general modified gravitational models of inflation
- Perturbation, Non-Gaussianity and Reheating in a GB--Attractor Model
- On: Natural Inflation
- Natural Inflation: Consistency with Cosmic Microwave Background Observations of Planck and BICEP2
- Natural Warm Inflation
- Prospects for Delensing the Cosmic Microwave Background for Studying Inflation
- Reheating phase diagram for single-field slow-roll inflationary models
- Some Aspects of Tachyon Field Cosmology
- Warm natural inflation
- Tachyonic Resonance Preheating in Expanding Universe
- Hybrid natural inflation from non Abelian discrete symmetry
- D-Brane Dynamics and NS5 Rings
- Inflation from Geometrical Tachyons
- Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem
- Geometrical Tachyon Kinks and NS5 Branes
- Tachyon field inflation in the light of BICEP2
- On testing and extending the inflationary consistency relation for tensor modes
- General bounds in Hybrid Natural Inflation