Aspects of Wave Turbulence in Preheating
arXiv:1406.1088 · doi:10.1088/1475-7516/2014/06/006
Abstract
In this work we have studied the nonlinear preheating dynamics of the inflationary model. It is well established that after a linear stage of preheating characterized by the parametric resonance, the nonlinear dynamics becomes relevant driving the system towards turbulence. Wave turbulence is the appropriated description of this phase since matter distributions are fields instead of usual fluids. Therefore, turbulence develops due to the nonlinear interations of waves, here represented by the small inhomogeneities of the inflaton field. We present relevant aspects of wave turbulence such as the Kolmogorov-Zakharov spectrum in frequency and wave number domains that indicates that there are a transfer of energy through scales. From the power spectrum of the matter energy density we were able to estimate the temperature of the thermalized system.
arXiv comment13 pages, 8 figures
References in corpus (29)
- Towards the Theory of Reheating After Inflation
- Reheating after Inflation
- Planck 2013 results. XXII. Constraints on inflation
- Universe Reheating after Inflation
- Reheating in Inflationary Cosmology: Theory and Applications
- Inflationary Cosmology
- Prethermalization
- Structure of Resonance in Preheating after Inflation
- Classical decay of inflaton
- Simulations of MHD Turbulence in a Strongly Magnetized Medium
- Turbulent Thermalization
- Preheating with Trilinear Interactions: Tachyonic Resonance
- LATTICEEASY: A Program for Lattice Simulations of Scalar Fields in an Expanding Universe
- Relativistic Turbulence: A Long Way from Preheating to Equilibrium
- Lattice study of classical inflaton decay
- Parametric Amplification of Gravitational Fluctuations During Reheating
- Parametric resonance in quantum field theory
- General Relativistic effects in preheating
- Metric preheating and limitations of linearized gravity
- Superconformal Generalization of the Chaotic Inflation Model λϕ^4/4 - ξ/ 2 ϕ^2 R
- Post-Inflation Reheating in an Expanding Universe
- The Development of Equilibrium After Preheating
- DEFROST: A New Code for Simulating Preheating after Inflation
- Non-Perturbative Quantum Dynamics of a New Inflation Model
- Preheating in an Expanding Universe: Analytic Results for the Massless Case
- Evolution of cosmological perturbations in a stage dominated by an oscillatory scalar field
- PSpectRe: A Pseudo-Spectral Code for (P)reheating
- Evolution of Cosmological Perturbations during Reheating
- Study of the preheating phase of chaotic inflation