Speaker
MARTTI RAIDAL
Description
The discovery of Higgs boson, apparent absence of any new physics at
EW scale and the existence of perturbative physics at and above Planck
scale, as hinted by BICEP2, require rethinking the paradigm of
naturalness. I suggest that no explicit mass terms exist in
fundamental Lagrangian (the concept of classical scale invariance) and
all scales are generated via logarithmic dimensional transmutation,
explaining their vast differences. Physical Naturalness principle,
involving very small couplings that are natural by ‘t Hooft criteria,
explains the stability of this setup. I illustrate the general
principles with simple models beyond the SM explaining the EW scale,
Dark Matter, Planck scale and inflation with minimal new degrees of
freedom. In this context, the Planck scale is just a “low scale”
imprint of transplanckian (inflationary) physics.
