Symmetry Breaking and Reheating after Inflation in No-Scale Flipped SU(5)

Abstract

No-scale supergravity and the flipped SU(5)$\times$U(1) gauge group provide an ambitious prototype string-inspired scenario for physics below the string scale, which can accommodate the Starobinsky-like inflation favoured by observation when the inflaton is associated with one of the singlet fields associated with neutrino mass generation. During inflation, the vacuum remains in the unbroken GUT phase, and GUT symmetry breaking occurs later when a field with a flat direction (the flaton) acquires a vacuum expectation value. Inflaton decay and the reheating process depend crucially on GUT symmetry breaking, as decay channels open and close, depending on the value of the flaton vacuum expectation value. Here, we consider the simultaneous cosmological evolution of both the inflaton and flaton fields after inflation. We distinguish weak, moderate and strong reheating regimes, and calculate in each case the entropy produced as all fields settle to their global minima. These three reheating scenarios differ in the value of a Yukawa coupling that introduces mass mixing between the singlets and the $10$s of SU(5). The dynamics of the GUT transition has an important impact on the production of gravitinos, and we also discuss the pattern of neutrino masses we expect in each of the three cases. Finally, we use recent CMB limits on neutrino masses to constrain the reheating models, finding that neutrino masses and the cosmological baryon asymmetry can both be explained if the reheating is strong.

arXiv comment49 pages, 21 figures

References in corpus (43)

• Planck 2015 results. XIII. Cosmological parameters
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Encyclopaedia Inflationaris
• CP violating decays in leptogenesis scenarios
• Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of theta_23, delta_CP, and the mass ordering
• How long before the end of inflation were observable perturbations produced?
• Thermal Production of Gravitinos
• BICEP2 / Keck Array x: Constraints on Primordial Gravitational Waves using Planck, WMAP, and New BICEP2/Keck Observations through the 2015 Season
• Big-Bang Nucleosynthesis and Gravitino
• Production of massive particles during reheating
• Global constraints on absolute neutrino masses and their ordering
• First CMB Constraints on the Inflationary Reheating Temperature
• Thermal Gravitino Production and Collider Tests of Leptogenesis
• Thermal production of gravitinos
• Starobinsky-like Inflationary Models as Avatars of No-Scale Supergravity
• Constraints on the Reheating Temperature in Gravitino Dark Matter Scenarios
• Big-Bang Nucleosynthesis with Unstable Gravitino and Upper Bound on the Reheating Temperature
• Gravitino Dark Matter and Cosmological Constraints
• Thermal and Non-Thermal Production of Gravitinos in the Early Universe
• The Search for a realistic flipped SU(5) string model
• Inflation and the Scale Dependent Spectral Index: Prospects and Strategies
• Thermalization after/during Reheating
• Inflation, Neutrino Baryogenesis, and (S)Neutrino-Induced Baryogenesis
• On the Thermal Regeneration Rate for Light Gravitinos in the Early Universe
• Enhancement of the Dark Matter Abundance Before Reheating: Applications to Gravitino Dark Matter
• Calculations of Inflaton Decays and Reheating: with Applications to No-Scale Inflation Models
• The Observational Status of Cosmic Inflation after Planck
• Thermalisation after inflation
• Thermalization Process after Inflation and Effective Potential of Scalar Field
• Prethermalization Production of Dark Matter
• Post-Inflationary Gravitino Production Revisited
• The prospects for CHORUS and NOMAD in the light of COBE and GALLEX
• Minimal Supersymmetric Hybrid Inflation, Flipped SU(5) and Proton Decay
• Supersymmetry, Nonthermal Dark Matter and Precision Cosmology
• Flipped Heavy Neutrinos from the Solar Neutrino Problem to Baryogenesis
• Flipped Angles and Phases: A Systematic Study
• Starobinsky-like Inflation, Supercosmology and Neutrino Masses in No-Scale Flipped SU(5)
• A General Classification of Starobinsky-like Inflationary Avatars of SU(2,1)/SU(2) x U(1) No-Scale Supergravity
• No-Scale Inflation
• Asymmetric Dark Matter Models in SO(10)
• Starobinsky-Like Inflation and Neutrino Masses in a No-Scale SO(10) Model
• Gravity Waves and Proton Decay in Flipped SU(5) Hybrid Inflation Model
• Flipped GUT Inflation

Cited by in corpus (22)

• BICEP/Keck Constraints on Attractor Models of Inflation and Reheating
• Building Models of Inflation in No-Scale Supergravity
• Supersymmetric Proton Decay Revisited
• Unified No-Scale Attractors
• Superstring-Inspired Particle Cosmology: Inflation, Neutrino Masses, Leptogenesis, Dark Matter & the SUSY Scale
• Proton Decay: Flipped vs Unflipped SU(5)
• Inflation and Leptogenesis in High-Scale Supersymmetry
• Phenomenology and Cosmology of No-Scale Attractor Models of Inflation
• Flipped SU(5) GUT Phenomenology: Proton Decay and $g_{\mu }-2$
• Beyond the standard model with six-dimensional spinors
• Flipped $g_{\mu }-2$
• A Unified No-Scale Model of Modulus Fixing, Inflation, Supersymmetry Breaking and Dark Energy
• Variable Inflaton Equation of State and Reheating
• Particle physics and cosmology of the string derived no-scale flipped $SU(5)$
• Non-Oscillatory No-Scale Inflation
• From Minkowski to de Sitter in Multifield No-Scale Models
• R-Symmetric Flipped SU(5)
• No-scale hybrid inflation with R-symmetry breaking
• The Heavy Gluino in Natural No-Scale $\mathcal{F}$-$SU$(5)
• Impact of Dark Sector Preheating on CMB Observables
• A Generic Analysis of Nucleon Decay Branching Fractions in Flipped SU(5) Grand Unification
• Flipped $SU(5)$ GUT with conformal gravity from a single supermultiplet