2022-12-21 15:10  P5A-1/Online

[Journal Club] Prof. Kin-Wang Ng

Prof. Kin-Wang Ng

The recent claim for a detection of the cosmic birefringence in the Planck CMB data has aroused the hunting for cosmic axions. I will give a review on the role of axions in cosmology including dark matter, dark energy, and cosmological defects, playing attention to their imprints on CMB polarization.