Speaker
Tomi Koivisto
(University of Tartu)
Description
The bulk action of the Yang-Mills theory based on the compact Lorentz group Spin(4)=SU(2)xSU(2) is determined by one parameter c_T. When c_T=1, the theory is right-handed and predicts a spin-2 field with the dynamics of the metric tensor in general relativity in the presence of dust. When c_T=0, the theory is achiral and has no local degrees of freedom. A transition from the latter to the former phase could thus generate the ΛCDM cosmology without the need of inflation, dark energy or dark matter.
Author
Tomi Koivisto
(University of Tartu)
