Absence of isentropic expansion in various inflation models
arXiv:hep-ph/0308211 · doi:10.1016/j.physletb.2004.12.028
Abstract
Dynamics of the inflaton is studied when it interacts with boson and fermion fields and in minimal supersymmetric models. This encompasses multifield inflation models, such as hybrid inflation, and typical reheating models. For much of the parameter space conducive to inflation, the inflaton is found to dissipate adequate radiation to have observational effects on density perturbations and in cases to significantly affect inflaton evolution. Thus, for many inflation models, believed to yield exclusively isentropic inflation, the parameter space now divides into regimes of isentropic and nonisentropic inflation.
arXiv comment6 pages, 1 figure. Version in press Phys. Lett. B
References in corpus (29)
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
- Towards the Theory of Reheating After Inflation
- Hybrid Inflation
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
- False Vacuum Inflation with Einstein Gravity
- Warm Inflation
- Adiabatic and entropy perturbations from inflation
- COBE, Gravitational Waves, Inflation and Extended Inflation
- Thermally Induced Density Perturbations in the Inflation Era
- Scalar perturbation spectra from warm inflation
- Warm Inflation in the Adiabatic Regime- a Model, an Existence Proof for Inflationary Dynamics in Quantum Field Theory
- Strong Dissipative Behavior in Quantum Field Theory
- Preheating of Fermions
- Microphysical Approach to Nonequilibrium Dynamics of Quantum Fields
- Interpolating the Stage of Exponential Expansion in the Early Universe: a possible alternative with no reheating
- Thermal Properties of an Inflationary Universe
- Perturbation Spectra in the Warm Inflationary Scenario
- Parametric Amplification of Metric Fluctuations During Reheating in Two Field Models
- Inflation and Monopoles in Supersymmetric SU(4)_c x SU(2)_L x SU(2)_R
- A First Principles Warm Inflation Model that Solves the Cosmological Horizon/Flatness Problems
- Affinity for Scalar Fields to Dissipate
- Construction of a robust warm inflation mechanism
- On Perturbations in Warm Inflation
- Spontaneous baryogenesis in warm inflation
- Inflationary Initial Conditions Consistent with Causality
- Fine-Tuning Solution for Hybrid Inflation in Dissipative Chaotic Dynamics
- Synergistic warm inflation
- Minimalism in Inflation Model Building
- Chaotic Symmetry Breaking and Dissipative Two-Field Dynamics
Cited by in corpus (27)
- Warm Inflation and its Microphysical Basis
- Warm inflation model building
- Dissipation coefficients from scalar and fermion quantum field interactions
- Density fluctuations from warm inflation
- Shear viscous effects on the primordial power spectrum from warm inflation
- Warm Inflation with a General Form of the Dissipative Coefficient
- The warm inflation story
- Stability analysis for the background equations for inflation with dissipation and in a viscous radiation bath
- Formation of Primordial Black Holes from Warm Inflation
- Warm inflation on the brane
- Warm Inflection
- Warm inflation in loop quantum cosmology: a model with a general dissipative coefficient
- Hamilton-Jacobi formalism to warm inflationary scenario
- Constraining Warm Inflation with the Cosmic Microwave Background
- Warm inflation dynamics in the low temperature regime
- Incorporating Memory Effects in Phase Separation Processes
- Dynamics and Non-Gaussianity in the Weak-Dissipative Warm Inflation Scenario
- Warm DBI inflation with constant sound speed
- Cosmological perturbations in warm-tachyon inflationary universe model with viscous pressure on the brane
- Study of warm inflationary models and their parameter estimation from CMB
- Sneutrino warm inflation in the minimal supersymmetric model
- Warm Inflation, Neutrinos and Dark matter: a minimal extension of the Standard Model
- Noncanonical warm inflation: a model with a general Lagrangian density
- On the dissipative non-minimal braneworld inflation
- Anisotropic warm inflation
- The exact solution approach to warm inflation
- Warm inflation solution to the eta-problem