Modular inflation and the orthogonal axion as curvaton

Abstract

We study a particular supersymmetric realization of the Peccei-Quinn symmetry which provides a suitable candidate for the curvaton field. The class of models considered also solves the mu problem, while generating the Peccei-Quinn scale dynamically. The curvaton candidate is a pseudo Nambu-Goldstone boson corresponding to an angular degree of freedom orthogonal to the axion field. Its order parameter increases substantially following a phase transition during inflation. This results in a drastic amplification of the curvaton perturbations. Consequently, the mechanism is able to accommodate low-scale inflation with Hubble parameter at the TeV scale. Hence, we investigate modular inflation using a string axion field as the inflaton with inflation scale determined by gravity mediated soft supersymmetry breaking. We find that modular inflation with the orthogonal axion as curvaton can indeed account for the observations for natural values of the parameters.

24 pages including 2 figures, uses Revtex

References in corpus (58)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Generating the curvature perturbation without an inflaton
• Hybrid Inflation
• 4-Year COBE DMR Cosmic Microwave Background Observations: Maps and Basic Results
• False Vacuum Inflation with Einstein Gravity
• Adiabatic CMB perturbations in pre-big bang string cosmology
• Effects of Cosmological Moduli Fields on Cosmic Microwave Background
• The primordial density perturbation in the curvaton scenario
• Nongaussian Isocurvature Perturbations from Inflation
• Baryogenesis from Flat Directions of the Supersymmetric Standard Model
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
• Large Scale Structure and Supersymmetric Inflation without Fine Tuning
• Natural Inflation: Particle Physics Models, Power Law Spectra for Large Scale Structure, and Constraints from COBE
• Supersymmetry Breaking in the Early Universe
• Cosmological consequences of MSSM flat directions
• Couplings and Scales in Strongly Coupled Heterotic String Theory
• Modular Cosmology
• Inflation and Monopoles in Supersymmetric SU(4)_c x SU(2)_L x SU(2)_R
• Fast-Roll Inflation
• The Curvaton as a Pseudo-Nambu-Goldstone Boson
• Supersymmetric Inflation With Constraints on Superheavy Neutrino Masses
• Cosmological Implications of Radiatively Generated Axion Scale
• Models of inflation liberated by the curvaton hypothesis
• Curvaton Dynamics
• Adiabatic density perturbations and matter generation from the MSSM
• R-Symmetry in the Minimal Supersymmetric Standard Model and Beyond with Several Consequences
• MSSM flat direction as a curvaton
• The Curvaton Hypothesis and the eta-problem of Quintessential Inflation, with and without Branes
• The curvaton scenario in supersymmetric theories
• Axions and the Strong CP Problem in M-theory
• Baryogenesis in Models with a Low Quantum Gravity Scale
• Constraints on a mixed inflaton and curvaton scenario for the generation of the curvature perturbation
• Can the curvaton paradigm accommodate a low inflation scale?
• The Peccei-Quinn Field as Curvaton
• Relaxing Constraints on Inflation Models with Curvaton
• Implications of the Curvaton on Inflationary Cosmology
• MSSM curvaton in the gauge-mediated SUSY breaking
• Right-Handed Sneutrinos as Curvatons
• Curvatons in Supersymmetric Models
• Large Scale Structure from the Higgs fields of the Supersymmetric Standard Model
• Low scale inflation and the curvaton mechanism
• Curvaton and QCD Axion in Supersymmetric Theories
• MSSM Higgses as the source of reheating and all matter
• Topological Curvatons
• Preheating curvature perturbations with a coupled curvaton
• Radion Cosmology in Theories with Universal Extra Dimensions
• Sneutrino condensate source for density perturbations, leptogenesis and low reheat temperature
• Supersymmetric Curvatons and Phase-Induced Curvaton Fluctuations
• Dumping inflaton energy density out of this world
• A Supersymmetric Standard Model of Inflation with Extra Dimensions
• Hybrid Inflation without Flat Directions and without Primordial Black Holes
• Monopoles, Axions and Intermediate Mass Dark Matter
• Inflationary cosmology in the central region of String/M-theory moduli space
• Conditions for a Successful Right-Handed Majorana Sneutrino Curvaton
• Curvatons in the minimally supersymmetric standard model
• Density perturbations from both the inflaton and the curvaton
• A model of cosmology and particle physics at an intermediate scale

Cited by in corpus (26)

• N-flationary magnetic fields
• On the Issue of the ζSeries Convergence and Loop Corrections in the Generation of Observable Primordial Non-Gaussianity in Slow-Roll Inflation. Part I: the Bispectrum
• Non-gaussianity and cosmic uncertainty in curvaton-type models
• Curvaton reheating allows TeV Hubble scale in NO inflation
• DBI-Curvaton
• Parity Violating Statistical Anisotropy
• Supergravity inspired Vector Curvaton
• Trapped Quintessential Inflation
• Generating the curvature perturbation with instant preheating
• Cosmological perturbations from inhomogeneous preheating and multi-field trapping
• Trapped Quintessential Inflation in the context of Flux Compactifications
• Geometrical Destabilisation of Ultra-Light Axions in String Inflation
• Inflation at the TeV scale with a PNGB curvaton
• Brane inflation without slow-roll
• Axion and Neutralinos from Supersymmetric Extensions of the Standard Model with anomalous U(1)'s
• NO Curvatons or Hybrid Quintessential Inflation
• Generating curvature perturbations with or without MSSM flat directions
• Modular thermal inflation without slow-roll approximation
• Hybrid Curvatons from Broken Symmetry
• Curvaton Dynamics in Brane-worlds
• Spectrum of Curvature Perturbation of Multi-field Inflation with Small-Field Potential
• Quintessential inflation and nonlinear effects of the tachyonic trap mechanism
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
• The quantum origin of cosmic structure: theory and observations
• Constraints on the three-fluid model of curvaton decay
• Non-Gaussianity from explicit $U(1)$-breaking interactions