Quantum loop effects to the power spectrum of primordial perturbations during ultra slow-roll inflation

Abstract

We examine the quantum loop effects on the single-field inflationary models in a spatially flat Friedmann-Robertson-Walker (FRW) cosmological space-time with a general self-interacting scalar field potential, which is modeled in terms of the Hubble flow parameters in the effective field theory approach. In particular, we focus on the scenarios in both slow-roll to ultra-slow-roll (SR-USR) and SR-USR-SR inflation, in which it is shown that density perturbations originated from quantum vacuum fluctuations can be enhanced at small-scales, and then potentially collapse into primordial black holes (PBHs). Here our estimates indicate significant one-loop corrections around the peak of the density power spectrum in both scenarios. The induced large quantum loop effects should be confirmed by a more formal quantum field theory, and, if so, should be treated in a self-consistent manner that will be discussed.

arXiv commentv3: 13 pages, 9 figures

References in corpus (28)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -
• Horizon crossing and inflation with large η
• Dissipation via Particle Production in Scalar Field Theories
• Primordial black hole dark matter from single field inflation
• Steepest growth of the power spectrum and primordial black holes
• Ultra Slow-Roll Inflation and the non-Gaussianity Consistency Relation
• Primordial Black Holes and Slow-Roll Violation
• Primordial Black Hole production in Critical Higgs Inflation
• Single Field Double Inflation and Primordial Black Holes
• Primordial Black Holes from $\alpha$-attractors
• Reheating and Thermalization, Linear Vs. Non-Linear Relaxation
• Quantum diffusion during inflation and primordial black holes
• Primordial Black Holes from Inflation and Quantum Diffusion
• Mechanisms for Primordial Black Hole Production in String Theory
• Primordial Black Holes from String Inflation
• Quantum corrections to slow roll inflation and new scaling of superhorizon fluctuations
• Quantum diffusion beyond slow-roll: implications for primordial black-hole production
• Stochastic inflation beyond slow roll
• Non-Perturbative Quantum Dynamics of a New Inflation Model
• Stochastic Ultra Slow Roll Inflation
• Failure of the stochastic approach to inflation beyond slow-roll
• Cosmological UV/IR Divergences and de-Sitter Spacetime
• Superhorizon curvature perturbation in ultra-slow-roll inflation
• Bispectrum from open inflation
• Off-equilibrium dynamics of the primordial perturbations in the inflationary universe: the O(N) model
• Relics of spatial curvature in the primordial non-gaussianity

Cited by in corpus (17)

• Quantum loop effects on the power spectrum and constraints on primordial black holes
• Constraining Primordial Black Hole Formation from Single-Field Inflation
• An analytical approximation of the scalar spectrum in the ultra-slow-roll inflationary models
• Galileon inflation evades the no-go for PBH formation in the single-field framework
• No-go for the formation of heavy mass Primordial Black Holes in Single Field Inflation
• Power spectrum of primordial perturbations during ultra-slow-roll inflation with back reaction effects
• Note on the bispectrum and one-loop corrections in single-field inflation with primordial black hole formation
• Primordial perturbations from ultra-slow-roll single-field inflation with quantum loop effects
• Quantum corrections to the primordial tensor spectrum: Open EFTs & Markovian decoupling of UV modes
• CMB from a Gauss-Bonnet-induced de Sitter fixed point
• Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
• Loop contributions to the scalar power spectrum due to quartic order action in ultra slow roll inflation
• Large fluctuations and Primordial Black Holes
• Comparing sharp and smooth transitions of the second slow-roll parameter in single-field inflation
• Incorporating Backreaction in One-Loop Corrections in Ultra-Slow-Roll Inflation
• Constraining ultra slow roll inflation using cosmological datasets
• Generating large primordial fluctuations in single-field inflation for PBH formation