Remarks on the renormalization of primordial cosmological perturbations

Abstract

We briefly review the need to perform renormalization of inflationary perturbations to properly work out the physical power spectra. We also summarize the basis of (momentum-space) renormalization in curved spacetime and address several misconceptions found in recent literature on this subject.

5 pages

References in corpus (6)

• On Adiabatic Renormalization of Inflationary Perturbations
• On infrared and ultraviolet divergences of cosmological perturbations
• The Creation of Particles in an Expanding Universe
• Revising the observable consequences of slow-roll inflation
• Amplitude of Perturbations from Inflation
• Inflation, quantum fields, and CMB anisotropies

Cited by in corpus (22)

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• On the power spectrum generated during inflation
• Renormalization of the inflationary perturbations revisited
• Running couplings from adiabatic regularization
• Electroweak Vacuum Instability and Renormalized Higgs Field Vacuum Fluctuations in the Inflationary Universe
• Adiabatic regularization with a Yukawa interaction
• Large fluctuations in the Sky
• Quadratic Isocurvature Cross-Correlation, Ward Identity, and Dark Matter
• Adiabatic regularization of power spectrum in nonminimally coupled general single-field inflation
• Running gravitational couplings, decoupling, and curved spacetime renormalization
• Scale-Invariant Curvature Fluctuations from an Extended Semiclassical Gravity
• Aspects of Quantum Gravity in Cosmology
• The Semiclassical Einstein Equation on Cosmological Spacetimes
• Ultraviolet-regularized power spectrum without infrared distortions in cosmological spacetimes
• On the adiabatic subtraction of cosmological perturbations
• Reply to "Comments on Origin of cosmic magnetic fields"
• Physical scale adiabatic regularization in cosmological spacetimes
• Regularization and conformal transformations of the power spectrum in general single field inflation
• Resolving the Inflationary Power Spectrum