Constraints on Kähler moduli inflation from reheating

Abstract

We present predictions of the Kähler moduli inflation model for the spectral tilt by parametrising the reheating epoch by an effective equation-of-state parameter and the number of e-foldings of reheating; and taking into account the post-inflationary history of the model. This model has an epoch in which the energy density of the universe is dominated by cold moduli particles. We compare our results with data from the PLANCK mission and find that exotic reheating (with effective equation of state $w_{\mathrm{re}}$ greater than 1/3) is required to match the observations. For canonical reheating case with $w_{\mathrm{re}}=0$, we deduce ${\text{log}}_{10}(T_{\mathrm{re}}/10^3\text{GeV})\simeq 1190(n_s-0.956)$. We also analyse our results in the context of observations being planned for the future and their projected sensitivities.

arXiv comment11 pages, 4 figures, updated with minor changes, PRD accepted version

References in corpus (36)

• de Sitter Vacua in String Theory
• Hierarchies from Fluxes in String Compactifications
• Systematics of Moduli Stabilisation in Calabi-Yau Flux Compactifications
• CFT's From Calabi-Yau Four-folds
• Reheating in Inflationary Cosmology: Theory and Applications
• Supersymmetry Breaking and alpha'-Corrections to Flux Induced Potentials
• Large-Volume Flux Compactifications: Moduli Spectrum and D3/D7 Soft Supersymmetry Breaking
• CMB-S4 Science Book, First Edition
• First CMB Constraints on the Inflationary Reheating Temperature
• Reheating constraints to inflationary models
• Kahler Moduli Inflation
• Reheating predictions in single field inflation
• Equation of state and Beginning of Thermalization After Preheating
• Equation-of-State Parameter for Reheating
• Dark Radiation in LARGE Volume Models
• Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
• Inflation and the Scale Dependent Spectral Index: Prospects and Strategies
• Exploring Cosmic Origins with CORE: Inflation
• Explicit de Sitter Flux Vacua for Global String Models with Chiral Matter
• Bayesian Analysis of Inflation II: Model Selection and Constraints on Reheating
• A Horizon Ratio Bound for Inflationary Fluctuations
• De Sitter from T-branes
• Constraints on α-attractor inflation and reheating
• De Sitter String Vacua from Dilaton-dependent Non-perturbative Effects
• de Sitter String Vacua from Supersymmetric D-terms
• F-theory at order ${\alpha }^{\prime 3}$
• CMB and reheating constraints to α-attractor inflationary models
• Moduli Vacuum Misalignment and Precise Predictions in String Inflation
• N-flation with Hierarchically Light Axions in String Compactifications
• Starobinsky-like Inflation, Supercosmology and Neutrino Masses in No-Scale Flipped SU(5)
• Inflationary Constraints on Late Time Modulus Dominated Cosmology
• De Sitter vacua from a D-term generated racetrack potential in hypersurface Calabi-Yau compactifications
• Fibre Inflation and Reheating
• Inflationary Predictions and Moduli Masses
• De Sitter Uplift with Dynamical Susy Breaking
• Low reheating temperatures in monomial and binomial inflationary potentials

Cited by in corpus (19)

• CMB constraints on the inflaton couplings and reheating temperature in $\alpha$-attractor inflation
• Connecting CMB anisotropy and cold dark matter phenomenology via reheating
• (P)reheating after minimal Plateau Inflation and constraints from CMB
• Primordial black holes and gravitational waves in nonstandard cosmologies
• Chiral Global Embedding of Fibre Inflation Models
• Implications of the NANOGrav result on primordial gravitational waves in nonstandard cosmologies
• On Inflationary Scale, Reheating Scale and Pre-BBN Cosmology with Scalar Fields
• Constraining Non-thermal Dark Matter by CMB
• Measuring the Inflaton Coupling in the CMB
• LiteBIRD and CMB-S4 Sensitivities to Reheating in Plateau Models of Inflation
• Confronting Kähler moduli inflation with CMB data
• Energy Density, Temperature and Entropy Dynamics in Perturbative Reheating
• Variable Inflaton Equation of State and Reheating
• Connecting Cosmic Inflation to Particle Physics with LiteBIRD, CMB-S4, EUCLID and SKA
• Study in the noncanonical domain of Goldstone inflation
• New ultraviolet operators in supersymmetric SO(10) GUT and consistent cosmology
• Finite temperature effects in modular cosmology
• Reheating constraints to modulus mass for single field inflationary models
• Non-thermal moduli production during preheating in $\alpha$-attractor inflation models