On the power spectrum generated during inflation

Abstract

Recently there have been differing viewpoints on how to evaluate the curvature power spectrum generated during inflation. Since the primordial curvature power spectrum is the seed for structure formation and provides a link between observations and inflationary parameters, it is important to resolve any disagreements over the expression for the power spectrum. In this article we discuss these differing viewpoints and indicate issues that are relevant to both approaches. We then argue why the standard expression is valid.

4 pages; Minor changes; Matches the published version

References in corpus (3)

• On "dynamical mass" generation in Euclidean de Sitter space
• On Adiabatic Renormalization of Inflationary Perturbations
• The Impact of Ultraviolet Regularization on the Spectrum of Curvature Perturbations During Inflation

Cited by in corpus (23)

• Warm Inflation in the light of Swampland Criteria
• Perturbative Quantum Gravity Comes of Age
• Towards a reliable effective field theory of inflation
• Origin of Cosmic Magnetic Fields
• Warm Tachyon Inflation and Swampland Criteria
• Vacuum and Gravitons of Relic Gravitational Waves, and Regularization of Spectrum and Energy-Momentum Tensor
• Renormalization of the inflationary perturbations revisited
• Tachyon warm-intermediate inflation in the light of Planck data
• Compactly supported linearised observables in single-field inflation
• Adiabatic regularization with a Yukawa interaction
• Warm Inflation, Neutrinos and Dark matter: a minimal extension of the Standard Model
• Spacetime correlators of perturbations in slow-roll de Sitter inflation
• Adiabatic regularisation of power spectra in $k$-inflation
• Gravitational waves induced by spinor fields
• Adiabatic regularization of power spectrum in nonminimally coupled general single-field inflation
• Adiabatic regularisation of power spectra in nonminimally coupled chaotic inflation
• Logarithmic divergences in the $k$-inflationary power spectra computed through the uniform approximation
• Ultraviolet-regularized power spectrum without infrared distortions in cosmological spacetimes
• Reply to "Comments on Origin of cosmic magnetic fields"
• Physical scale adiabatic regularization in cosmological spacetimes
• Resolving the Inflationary Power Spectrum
• On Adiabatic Renormalization with a Physically Motivated Infrared Cut-Off
• On the renormalization of ultraviolet divergences in the inflationary angular power spectrum