Vendredi 01 mars 2013 à 14h15

Auditoire Stueckelberg, Ecole de Physique

### The Conformal Standard Model

**Hermann Nicolai**, Max Plank Institut Potsdam

###### It has been known for some time that classically unbroken conformal symmetry may provide a possible mechanism towards explaining the stability of the electroweak scale w.r.t. the Planck scale, alternative to low energy supersymmetry. In this talk I will review some of my work with K. Meissner and argue that this is a viable possibility if (1) there are no intermediate scales of any kind, and (2) the RG evolved standard model couplings exhibit neither Landau poles nor instabilities up to the Planck scale.