Entropy mode loops and cosmological correlations during perturbative reheating
arXiv:1409.2884 · doi:10.1088/1475-7516/2015/01/026
Abstract
Recently, it has been shown that during preheating the entropy modes circulating in the loops, which correspond to the inflaton decay products, meaningfully modify the cosmological correlation functions at superhorizon scales. In this paper, we determine the significance of the same effect when reheating occurs in the perturbative regime. In a typical two scalar field model, the magnitude of the loop corrections are shown to depend on several parameters like the background inflaton amplitude in the beginning of reheating, the inflaton decay rate and the inflaton mass. Although the loop contributions turn out to be small as compared to the preheating case, they still come out larger than the loop effects during inflation.
arXiv commentv2: 14 pages, 1 figure, revtex4-1, comments added, to appear in JCAP
References in corpus (34)
- Non-Gaussian features of primordial fluctuations in single field inflationary models
- Towards the Theory of Reheating After Inflation
- Reheating after Inflation
- Quantum Contributions to Cosmological Correlations
- Universe Reheating after Inflation
- Adiabatic and entropy perturbations from inflation
- Quantum effects can render w<-1 on cosmological scales
- Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?
- Parametric Amplification of Gravitational Fluctuations During Reheating
- General Relativistic effects in preheating
- Metric preheating and limitations of linearized gravity
- Quantum Stability of a w < - 1 Phase of Cosmic Acceleration
- Symmetries and Loops in Inflation
- Massless Metric Preheating
- The constancy of ζin single-clock Inflation at all loops
- Restoring the sting to metric preheating
- Super-horizon perturbations and preheating
- De Sitter Breaking through Infrared Divergences
- Quantum Gravity Corrections to the One Loop Scalar Self-Mass during Inflation
- The Zeta-Zeta Correlator Is Time Dependent
- One Loop Corrected Mode Functions for SQED during Inflation
- Backreaction and the Parametric Resonance of Cosmological Fluctuations
- On Metric Preheating
- Cosmological UV/IR Divergences and de-Sitter Spacetime
- Issues Concerning Loop Corrections to the Primordial Power Spectra
- On generation of metric perturbations during preheating
- Ultraviolet Divergences in Cosmological Correlations
- IR Divergences in Inflation and Entropy Perturbations
- The Quantum Corrected Mode Function and Power Spectrum for a Scalar Field during Inflation
- IR Divergence in Inflationary Tensor Perturbations from Fermion Loops
- Stationary Phase Approximation and Instanton-like States for Cosmological In-In Path Integrals
- Loops in reheating and cosmological perturbations
- More on loops in reheating: Non-gaussianities and tensor power spectrum
- In-in formalism, pseudo-instantons and rethinking quantum cosmology