### Speaker

### Description

I argue that the SM in the Higgs phase does not suffer form a

`hierarchy problem'' and that similarly the`

cosmological constant

problem'' resolves itself if we understand the SM as a low energy

effective theory emerging from a cut-off medium at the Planck scale.

We discuss these issues under the condition of a stable Higgs vacuum,

which allows to extend the SM up to the Planck length. The bare Higgs

boson mass then changes sign below the Planck scale, such the the SM

in the early universe is in the symmetric phase. The cut-off enhanced

Higgs mass term as well as the quartically enhanced cosmological

constant term trigger the inflation of the early universe. Reheating

follows by the heavy Higgses decaying predominantly into top--anti-top

pairs, which at this stage are effectively massless. The coefficients

of the shift between bare and renormalized Higgs mass as well as of

the shift between bare and renormalized vacuum energy density exhibit

close-by zeros at about $10^{15}~$GeV. The scale dependent Higgs mass

counter term is negative in the Higgs phase (low energy), which

triggers the electroweak phase transition, and changes sign at the

transition point after which is is large positive, which turns the

system into the symmetric phase at high energies. Obviously, the SM

Higgs system initially provides a huge \textbf{dark energy} density

and the resulting inflation is taming the originally huge cosmological

constant to the small value observed today, whatever its initial value

was, provided it was large enough to trigger inflation. While

laboratory experiments can access physics of the broken phase only,

the symmetric phase above the Higgs transition point is accessible

though physics of the early universe as it manifests in cosmological

observations. The main unsolved problem remains the origin of dark

matter.