Quantum gravity extension of the inflationary scenario

Ivan Agullo, Abhay Ashtekar, William Nelson

Research output: Contribution to journalArticlepeer-review

182 Scopus citations


Since the standard inflationary paradigm is based on quantum field theory on classical space-times, it excludes the Planck era. Using techniques from loop quantum gravity, the paradigm is extended to a self-consistent theory from the Planck scale to the onset of slow roll inflation, covering some 11 orders of magnitude in energy density and curvature. This preinflationary dynamics also opens a small window for novel effects, e.g., a source for non-Gaussianities, which could extend the reach of cosmological observations to the deep Planck regime of the early Universe.

Original languageEnglish (US)
Article number251301
JournalPhysical review letters
Issue number25
StatePublished - Dec 17 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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