Orateur
Jens Chluba
(JBCA)
Description
The recombination history of the universe is one of the crucial theoretical ingredients for the computation of the CMB temperature and polarization power spectra. In this talk, I will discuss this link and show how modified recombination scenarios help alleviate the Hubble tension. Beyond changes to the average recombination history I will also consider transport corrections in the clumpy universe at recombination and then discuss how we might be able to directly probe the recombination process with future CMB spectrometers.