Heidelberg 2022 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 3: Cosmology

GR 3.6: Talk

Monday, March 21, 2022, 17:55–18:15, GR-H3

Power spectrum for perturbations in an inflationary model for a closed universe — •tatevik vardanyan and claus kiefer — Institute for Theoretical Physics, University of Cologne, Köln, Germany

We derive the power spectrum of primordial quantum fluctuations in an inflationary universe for curvature parameter K=1. This is achieved through a Born-Oppenheimer type of approximation scheme from the Wheeler-DeWitt equation of canonical quantum gravity using gauge-invariant variables. Compared to the flat model, the closed model exhibits a deficit of power at large scales.

Reference: arXiv:2111.07835