2015/10/31 by Béatrice Bonga, Brajesh Gupt · 43 citations
Physics and Astronomy · #Advanced Mathematical Theories and Applications #Cosmology #Cosmology and Gravitation Theories #Inflation (cosmology) #Loop quantum cosmology #Loop quantum gravity #Noncommutative and Quantum Gravity Theories #Observable #Planck #Planck scale #Quantum #Quantum cosmology #Spectral density #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1007/s10714-016-2071-0
published in General Relativity and Gravitation 48(6) (Springer Science+Business Media) · 6 pages, 3 figures; updated to match published version in GRG Letters, references added and discussion expanded
openalex publication_date 2016/05/11 · arxiv created 2016/05/24 · arxiv updated 2016/05/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A self-consistent pre-inflationary extension of the inflationary scenario with the Starobinsky potential, favored by Planck data, is studied using techniques from loop quantum cosmology (LQC). The results are compared with the quadratic potential previously studied. Planck scale completion of the inflationary paradigm and observable signatures of LQC are found to be robust under the change of the inflaton potential. The entire evolution, from the quantum bounce all the way to the end of inflation, is compatible with observations. Occurrence of desired slow-roll phase is almost inevitable and natural initial conditions exist for both the background and perturbations for which the resulting power spectrum agrees with recent observations. There exist initial data for which the quantum gravitational corrections to the power spectrum are potentially observable.