Geneva University seminars

Probing new physics in the dark sector with Planck

by Andrea Marchini (Roma)

Friday, 4 October 2013 from to (Europe/Zurich)
at Geneva University ( Room 234 )
24 quai E. Ansermet, CH-1211 Genève 4
Description
The recent measurements of high resolution of the anisotropies in the Cosmic Microwave Background provided by the Planck satellite have been opening a new window on the early universe. On one hand LCDM model seems to be a good benchmark model, on the other hand some tensions arise in the parameters when comparing Planck values with the results of other independent experiments. Even if the tensions might be due to systematics, it is worth to investigate if they can instead be hints for new physics in the dark sector. I will show constraints on f(R) gravity and on interacting dark matter-dark energy models and I will discuss how the tensions can be mitigated in these scenarios.