Can effects of quantum gravity be observed in the cosmic microwave background?, Claus Kiefer (Cologne)
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abgelegt unter:
FUNDI-Seminar
Can effects of quantum gravity be observed in the cosmic microwave background?
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| Wann |
11.02.2014 von 16:15 bis 17:30 |
| Wo | Physik HH, SR815 |
| Termin übernehmen |
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In any approach to quantum 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, we find a constraint on the Hubble parameter of inflation. I also compare these results with the predictions from loop quantum cosmology.
Ref.: C. Kiefer and M. Krämer, Phys. Rev. Lett. 108, 021301 (2012).
Alumni-Preis 2020