Observational constraints on loop quantum cosmology

Martin Bojowald, Gianluca Calcagni, Shinji Tsujikawa

Research output: Contribution to journalArticlepeer-review

100 Scopus citations


In the inflationary scenario of loop quantum cosmology in the presence of inverse-volume corrections, we give analytic formulas for the power spectra of scalar and tensor perturbations convenient to compare with observations. Since inverse-volume corrections can provide strong contributions to the running spectral indices, inclusion of terms higher than the second-order runnings in the power spectra is crucially important. Using the recent data of cosmic microwave background and other cosmological experiments, we place bounds on the quantum corrections.

Original languageEnglish (US)
Article number211302
JournalPhysical review letters
Issue number21
StatePublished - Nov 15 2011

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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