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Event: 'Can Effects Of Quantum Gravity Be Observed In The Cosmic Microwave Background? (Claus Kiefer, University Of Cologne)'

Seminars
CENTRA Seminars
Date: Thursday, February 16, 2012 At 02:30 PM
Duration: 1 Hour
Contact Info:
Mariam Bouhmadi Lopez
Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
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In any approach to qunatum gravity, it is crucial to look for observational effects. In my talk, I discuss how quantum gravitational contributions to the anisotropy spectrum of the cosmic microwave background arise in the framework of quantum geometrodynamics (Wheeler-DeWitt equation). From the present non-observation of these contributions, one finds a constraint on the Hubble parameter of inflation. I finally compare these results with the corresponding predictions from loop quantum cosmology.

Ref.: C. Kiefer and M. Krämer, Phys. Rev. Lett. 108, 021301 (2012).



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