Note on inflation and trans-Planckian physics

2002/03/31 by Ulf Danielsson, Ulf H. Danielsson · 19 citations
Physics and Astronomy · #Anisotropy #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark energy #Epistemology #Hubble's law #Inflation (cosmology) #Lambda #Mathematical physics #Noncommutative and Quantum Gravity Theories #Particle physics #Philosophy #Physics #Physics beyond the Standard Model #Planck #Planck scale #Planck time #Quantum #Quantum gravity #Quantum mechanics #Scale (ratio) #Simple (philosophy) #Theoretical physics #astro-ph #hep-th

paper · pdf · doi:10.1103/physrevd.66.023511

published as Phys.Rev. D66 (2002) 023511 · 12 pages. v2: typos corrected and references added. v3: final version accepted for publication by PRD. Improved discussion of adiabatic vacuum

arxiv created 2002/05/15 · openalex publication_date 2002/07/16 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In this paper we consider the influence of trans-Planckian physics on the CMBR anisotropies produced by inflation. We consider a simple toy model that allows for analytic calculations and argue on general grounds, based on ambiguities in the choice of vacuum, that effects are expected with a magnitude of the order of H/\ensuremathΛ, where H is the Hubble constant during inflation and \ensuremathΛ the scale for new physics, e.g., the Planck scale.

Citations

• A comment on trans-Planckian physics in inflationary universe
• Trans-Planckian dispersion and scale invariance of inflationary perturbations
• Quantum Fields in Curved Space
• Short distance physics and the consistency relation for scalar and tensor fluctuations in the inflationary universe
• Relic dark energy from the trans-Planckian regime
• Trans-Planckian problem of inflationary cosmology

Cited by

• Scale-dependent power spectrum from initial excited-de Sitter modes
• Constraining dark energy
• Exploring the superimposed oscillations parameter space
• The quantum swampland
• States of low energy in bouncing inflationary scenarios in loop quantum cosmology
• On the one loop corrections to inflation and the CMB anisotropies
• Primordial tensor power spectrum in holonomy correctedΩloop quantum cosmology
• Universal upper bound on the inflationary energy scale from the trans-Planckian censorship conjecture
• Decoupling in an expanding universe: backreaction barely constrains short distance effects in the cosmic microwave background
• An asymptotic method for selection of inflationary modes
• Higher order corrections to asymptotic-de Sitter inflation
• Inflation in Non-de Sitter Background with Coherent States
• Large angular scale CMB anisotropy from an excited initial mode
• Observing trans-Planckian ripples in the primordial power spectrum with future large scale structure probes
• A quintessentially geometric model
• Signatures of initial state modifications on bispectrum statistics
• Short distance and initial state effects in inflation: Stress tensor and decoherence
• Red, Straight, no bends: primordial power spectrum reconstruction from CMB and large-scale structure
• Conceptual Problems of Inflationary Cosmology and a New Approach to Cosmological Structure Formation