A Phenomenological Model for the Early Universe

Abstract

We consider the description of cosmological dynamics from the onset of inflation by a perfect fluid whose parameters must be consistent with the strength of the enhanced quantum loop effects that can arise during inflation. The source of these effects must be non-local and a simple incarnation of it is studied both analytically and numerically. The resulting evolution stops inflation in a calculable amount of time and leads to an oscillatory universe with a vanishing mean value for the curvature scalar and an oscillation frequency which we compute.

33 pages, 12 figures; revised for publication in Physical Review D

References in corpus (14)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• De Sitter Space and Eternity
• Modified non-local-F(R) gravity as the key for the inflation and dark energy
• Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?
• Stochastic Inflationary Scalar Electrodynamics
• Leading Log Solution for Inflationary Yukawa
• Dynamics of Nonlocal Cosmology
• On Resumming Inflationary Perturbations beyond One-loop
• Reply to `Can infrared gravitons screen $\Lambda$?'
• Can infrared gravitons screen $\Lambda$?
• A Simple Operator Check of the Effective Fermion Mode Function during Inflation
• de Sitter limit of inflation and nonlinear perturbation theory
• A Simplified Quantum Gravitational Model of Inflation

Cited by in corpus (33)

• Trans-Planckian Issues for Inflationary Cosmology
• Nonlocal Models of Cosmic Acceleration
• Hubble expansion and structure formation in the "running FLRW model" of the cosmic evolution
• Light propagation in statistically homogeneous and isotropic universes with general matter content
• Observational Viability and Stability of Nonlocal Cosmology
• Nonlocal metric formulations of MOND with sufficient lensing
• Cosmologies with a time dependent vacuum
• A Completely Regular Quantum Stress Tensor with $w<-1$
• Aspects of Nonlocality in Quantum Field Theory, Quantum Gravity and Cosmology
• Issues Concerning Loop Corrections to the Primordial Power Spectra
• Cosmological Backreaction for a Test Field Observer in a Chaotic Inflationary Model
• New representation of the nonlocal ghost-free gravity theory
• Nonlocal Metric Realizations of MOND
• Revival of the Deser-Woodard nonlocal gravity model: Comparison of the original nonlocal form and a localized formulation
• A Caveat on Building Nonlocal Models of Cosmology
• Quantum Gravity and Inflation
• Post-Inflationary Evolution via Gravitation
• Primordial bouncing cosmology in the Deser-Woodard nonlocal gravity
• Noether symmetry in a nonlocal f(T) Gravity
• Computing the Primordial Power Spectra Directly
• Precision Predictions for the Primordial Power Spectra of Scalar Potential Models of Inflation
• Negative Energy Cosmology and the Cosmological Constant
• Primordial Density Perturbations and Reheating from Gravity
• Stochastic Samples versus Vacuum Expectation Values in Cosmology
• Metric for Rotating object in Infrared Corrected Nonlocal Gravity Model
• Tensor Mode Backreaction During Slow-roll Inflation
• Possible Enhancement of High Frequency Gravitational Waves
• Primordial Gravitational Waves Enhancement
• An Improved Cosmological Model
• The Volume of the Past Light-Cone and the Paneitz Operator
• Non-local cosmological models
• The Case for Nonlocal Modifications of Gravity
• Spherically symmetric static solutions, newtonian potential and degrees of freedom of a Nonlocal action