title: Observational constraints on loop quantum cosmology.
abstract: 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.
authors.affiliation: Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, 16802, USA.
authors.forename: Martin
authors.initials: M
authors.lastname: Bojowald
authors.forename: Gianluca
authors.initials: G
authors.lastname: Calcagni
authors.forename: Shinji
authors.initials: S
authors.lastname: Tsujikawa