CMB and the origin of structure

The tiny temperature fluctuations observed in the Cosmic Microwave background are seeds for the  structure in the universe today. They originate from primordial perturbations generated in the very early universe, presumably during inflation, by some new physics beyond the Standard Model. The Planck data provides an unprecedented probe of the high energy physics in the early universe, and the group is strongly involved in the observational and theoretical analysis of the new information. Planck constraints on observables such as non-Gaussianity play a crucial role for constraining specific models for the origin of the primordial perturbations, the study of which is central to our research.  We are especially interested in models based on concrete extensions of the Standard Model which can be both tested by their cosmological implications and also confronted with the latest LHC data.

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