$\alpha$-Attractor and Reheating in a Model with Non-Canonical Scalar Fields

Abstract

We consider two non-canonical scalar fields (tachyon and DBI) with E-model type of the potential. We study cosmological inflation in these models to find possible $\alpha$-attractors. We show that similar to the canonical scalar field case, in both tachyon and DBI models there is a value of the scalar spectral index in small $\alpha$ limit which is just a function of the e-folds number. However, the value of $n_s$ in DBI model is somewhat different from the other ones. We also compare the results with Planck2015 TT, TE, EE+lowP data. The reheating phase after inflation is studied in these models which gives some more constraints on the model's parameters.

22 pages, 9 figures, To appear in IJMPD

References in corpus (19)

• The Effective Field Theory of Inflation
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• Reheating constraints to inflationary models
• Reheating predictions in single field inflation
• Large Field Inflation and Double $\alpha$-Attractors
• The Inflationary Trispectrum for Models with Large Non-Gaussianities
• Primordial non-Gaussianity from the DBI Galileons
• Single-field $\alpha$-attractors
• Primordial non-Gaussianities in general modified gravitational models of inflation
• Perturbation, Non-Gaussianity and Reheating in a GB-$\alpha$-Attractor Model
• Cosmological Attractor Models and Higher Curvature Supergravity
• Inflationary $\alpha$-attractors from $F(R)$ Gravity
• The double attractor behavior of induced inflation
• Quantum modes in DBI inflation: exact solutions and constraints from vacuum selection
• On Power Law Inflation in DBI Models
• Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem
• Sneutrino Inflation with $\alpha$-attractors
• Tachyon field inflation in the light of BICEP2

Cited by in corpus (24)

• Reheating in Models with Non-minimal Coupling in metric and Palatini formalisms
• Gauss-Bonnet Inflation after Planck2018
• On Inflationary Scale, Reheating Scale and Pre-BBN Cosmology with Scalar Fields
• $R^p$ Attractors Static Neutron Star Phenomenology
• Universal Inflationary Attractors Implications on Static Neutron Stars
• Inflationary Attractors Predictions for Static Neutron Stars in the Mass-Gap Region
• Static Neutron Stars Perspective of Quadratic and Induced Inflationary Attractor Scalar-tensor Theories
• Preinflationary dynamics of $\alpha -$attractor in loop quantum cosmology
• Measuring the Inflaton Coupling in the CMB
• Observational Viability of an Inflation Model with E-Model non-Minimal Derivative Coupling
• LiteBIRD and CMB-S4 Sensitivities to Reheating in Plateau Models of Inflation
• Revisiting pre-inflationary universe of family of $\alpha -$attractor in loop quantum cosmology
• Energy Density, Temperature and Entropy Dynamics in Perturbative Reheating
• Generalized $R^p$-attractor Cosmology in the Jordan and Einstein Frames: New Type of Attractors and Revisiting Standard Jordan Frame $R^p$ Inflation
• Mimetic DBI Inflation in Confrontation with Planck2018 data
• On the $\alpha$-attractor T-models
• Variable Inflaton Equation of State and Reheating
• New generalization of the simplest $\alpha$-attractor $T$ model
• Connecting Cosmic Inflation to Particle Physics with LiteBIRD, CMB-S4, EUCLID and SKA
• Tachyon Mimetic Inflation as an Instabilities-Free Model
• Some Aspects of the Tachyon Inflation with Superpotential in Confrontation with Planck2018 Data
• Intermediate and Power-Law Inflation in the Tachyon Model with Constant Sound Speed
• Viable Intermediate Inflation in the Mimetic DBI Model
• A Tachyon Field around the Black Hole