Study of the preheating phase of chaotic inflation
arXiv:0801.0730 · doi:10.1103/PhysRevD.78.083514
Abstract
Particle production and its effects on the inflaton field are investigated during the preheating phase of chaotic inflation using a model consisting of a massive scalar inflaton field coupled to N massless quantum scalar fields. The effects of spacetime curvature and interactions between the quantum fields are ignored. A large N expansion is used to obtain a coupled set of equations including a backreaction equation for the classical inflaton field. Previous studies of preheating using these equations have been done. Here the first numerical solutions to the full set of equations are obtained for various values of the coupling constant and the initial amplitude of the inflaton field. States are chosen so that initially the backreaction effects on the inflaton field are small and the mode equations for the quantum fields take the form of Mathieu equations. Potential problems relating to the parametric amplification of certain modes of the quantum fields are identified and resolved. A detailed study of the damping of the inflaton field is undertaken. Some predictions of previous studies are verified and some new results are obtained.
PRD version, some changes and corrections, 37 pages, 10 figures
References in corpus (37)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- Towards the Theory of Reheating After Inflation
- Reheating after Inflation
- Universe Reheating after Inflation
- Inflationary Cosmology
- Classical decay of inflaton
- Dissipation via Particle Production in Scalar Field Theories
- Non-Thermal Phase Transitions after Inflation
- Analytic and Numerical Study of Preheating Dynamics
- Equation of state and Beginning of Thermalization After Preheating
- LATTICEEASY: A Program for Lattice Simulations of Scalar Fields in an Expanding Universe
- Preheating with Trilinear Interactions: Tachyonic Resonance
- Non-Equilibrium Quantum Fields in the Large N Expansion
- Lattice study of classical inflaton decay
- Parametric Amplification of Gravitational Fluctuations During Reheating
- Parametric resonance in quantum field theory
- GUT Baryogenesis after Preheating
- Reheating and Thermalization, Linear Vs. Non-Linear Relaxation
- Resonant decay of Bose condensates
- Cosmic strings from preheating
- Scalar Field Dynamics in Friedman Robertson Walker Spacetimes
- The Development of Equilibrium After Preheating
- Lattice calculation of non-Gaussianity from preheating
- Nonequilibrium inflaton dynamics and reheating: Back reaction of parametric particle creation and curved spacetime effects
- Nonlinear Inflaton Fragmentation after Preheating
- Quantum Rolling Down out of Equilibrium
- O(N) Quantum fields in curved spacetime
- Calculation of Particle Production by Nambu Goldstone Bosons with Application to Inflation Reheating and Baryogenesis
- Inflaton Decay in De Sitter Spacetime
- Preheating in New Inflation
- New constraints on the observable inflaton potential from WMAP and SDSS
- What do WMAP and SDSS really tell about inflation?
- Nonequilibrium dynamics: preheating in the SU(2) Higgs model
- Analytic approximation and an improved method for computing the stress-energy of quantized scalar fields in Robertson-Walker spacetimes
- Cosmological Reheating and Self-Interacting Final State Bosons
- One-loop theory in Robertson-Walker spacetimes: adiabatic regularization and analytic approximation
- Chaotic dynamics in preheating after inflation
Cited by in corpus (14)
- Adiabatic regularization and particle creation for spin one-half fields
- Adiabatic regularization for spin-1/2 fields
- Adiabatic expansions for Dirac fields, renormalization, and anomalies
- On the Suppression of Parametric Resonance and the Viability of Tachyonic Preheating after Multi-Field Inflation
- Quantum Corrections to Inflaton and Curvaton Dynamics
- Adiabatic regularization with a Yukawa interaction
- Reheating in tachyonic inflationary models: Effects on the large scale curvature perturbations
- Note on the pragmatic mode-sum regularization method: translational-splitting in a cosmological background
- R-summed form of adiabatic expansions in curved spacetime
- Ultraviolet-regularized power spectrum without infrared distortions in cosmological spacetimes
- Breakdown of the semiclassical approximation during the early stages of preheating
- Aspects of Wave Turbulence in Preheating
- The Cosmological Semiclassical Einstein Equation as an Infinite-Dimensional Dynamical System
- Physical scale adiabatic regularization in cosmological spacetimes