Karlsruhe 2011 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 2: Quantengravitation und Quantenkosmologie
GR 2.2: Vortrag
Montag, 28. März 2011, 17:05–17:25, 20.40: 101
Quantum gravitational contributions to the CMB anisotropy spectrum — •Manuel Krämer and Claus Kiefer — Institut für Theoretische Physik, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
We derive the primordial power spectrum of density fluctuations in the framework of quantum cosmology. For this purpose, we perform a Born-Oppenheimer approximation to the Wheeler-DeWitt equation for an inflationary universe with a scalar field. In this way we first recover the scale-invariant power spectrum that is found as an approximation in the simplest inflationary models. We then obtain quantum gravitational corrections to this spectrum and discuss whether they lead to measurable signatures in the CMB anisotropy spectrum.