Possible Enhancement of High Frequency Gravitational Waves

Abstract

We study the tensor perturbations in a class of non-local, purely gravitational models which naturally end inflation in a distinctive phase of oscillations with slight and short violations of the weak energy condition. We find the usual generic form for the tensor power spectrum. The presence of the oscillatory phase leads to an enhancement of gravitational waves with frequencies somewhat less than 10^{10} Hz.

27 pages, 11 figures, LaTeX.2e

References in corpus (44)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Equilibrium State of a Massless Self-Interacting Scalar Field in the De Sitter Background
• The phantom menaced: constraints on low-energy effective ghosts
• Bouncing Universes in String-inspired Gravity
• Quantum effects can render w<-1 on cosmological scales
• Nonlocal Cosmology
• Super-Acceleration from Massless, Minimally Coupled ${\varphi }^4$
• High Resolution Observations of the CMB Power Spectrum with ACBAR
• The Quantum Gravitational Back-Reaction On Inflation
• Modified non-local-F(R) gravity as the key for the inflation and dark energy
• Quantum Gravity Slows Inflation
• Stochastic Quantum Gravitational Inflation
• Stochastic Inflationary Scalar Electrodynamics
• Two Loop Scalar Self-Mass during Inflation
• Dark energy: a quantum fossil from the inflationary Universe?
• Accelerating cosmologies from non-local higher-derivative gravity
• Quantum Stability of a w < - 1 Phase of Cosmic Acceleration
• Cosmological Dark Energy: Prospects for a Dynamical Theory
• Route to nonlocal cosmology
• Reconstructing the Distortion Function for Nonlocal Cosmology
• Gradient instability for w < -1
• Newtonian limit of nonlocal cosmology
• A Nonlocal Metric Formulation of MOND
• Reply to `Can infrared gravitons screen $\Lambda$?'
• Laser-interferometric Detectors for Gravitational Wave Background at 100 MHz : Detector Design and Sensitivity
• Nonlocal Effective Gravitational Field Equations and the Running of Newton's G
• Infrared Propagator Corrections for Constant Deceleration
• Large Nongaussianity from Nonlocal Inflation
• Can infrared gravitons screen $\Lambda$?
• Non-Perturbative Models For The Quantum Gravitational Back-Reaction On Inflation
• Massive fields temper anomaly-induced inflation: the clue to graceful exit?
• Fading Gravity and Self-Inflation
• Cosmological long wavelength perturbations
• A Scalar Measure Of The Local Expansion Rate
• A Simple Operator Check of the Effective Fermion Mode Function during Inflation
• One-loop effective action for non-local modified Gauss-Bonnet gravity in de Sitter space
• Cosmological significance of one-loop effective gravity
• Cosmic perturbations with running G and Lambda
• A Simplified Quantum Gravitational Model of Inflation
• A Measure of Cosmological Acceleration
• A Phenomenological Model for the Early Universe
• Post-Inflationary Evolution via Gravitation
• Nonlocal Inflation
• Primordial Density Perturbations and Reheating from Gravity

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