Cosmology seminar: Carsten van de Bruck

Carsten van de Bruck is a Professor at the University of Sheffield.

The properties of the CMB in the presence of non-conformal couplings to dark energy

Scalar fields remain well motivated candidates for a dark energy component. Cosmologists have recently 
begun to study quite generic scalar field theories for dark energy, in which dark energy couples to all 
energy forms. I will discuss that certain couplings of dark energy to radiation will alter the properties of 
the CMB considerably. This opens up to test so-called non-conformal couplings with future high-precision CMB 
experiments. First constraints on these types of couplings coming from the temperature-redshift relation and 
spectral distortions will be discussed. 


Published Sep. 11, 2013 12:01 PM - Last modified May 5, 2014 11:02 AM