Evolution of Non-linear Fluctuations in Preheating after Inflation

Abstract

We investigate the evolution of the non-linear long wavelength fluctuations during preheating after inflation. By using the separate universe approach, the temporal evolution of the power spectrum of the scalar fields and the curvature variable is obtained numerically. We found that the amplitude of the large scale fluctuations is suppressed after non-linear evolution during preheating.

To be published in Class. Quantum Grav

References in corpus (4)

• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Non-Gaussianity in the modulated reheating scenario
• The Inflationary Trispectrum for Models with Large Non-Gaussianities
• Application of the Separate Universe Approach to Preheating

Cited by in corpus (9)

• Density correlations and dynamical Casimir emission of Bogoliubov phonons in modulated atomic Bose-Einstein condensates
• Nongaussianity from Tachyonic Preheating in Hybrid Inflation
• Non-gaussianity and cosmic uncertainty in curvaton-type models
• Very Large Primordial Non-Gaussianity from multi-field: Application to Massless Preheating
• Non-Gaussianity from massless preheating
• Generating the primordial curvature perturbations in preheating
• Statistics of general functions of a Gaussian field -application to non-Gaussianity from preheating-
• Non-linear Preheating with Scalar Metric Perturbations
• Long wavelength limit of evolution of nonlinear cosmological perturbations