  Classicalization is a phenomenon in which a theory prevents itself from
entering into a strong-coupling regime, by redistributing the energy among many
weakly-interacting soft quanta. In this way, the scattering process of some
initial hard quanta splits into a large number of soft elementary processes. In
short, the theory trades the strong coupling for a high-multiplicity of quanta.
At very high energies, the outcome of such a scattering experiment is a
production of soft states of high occupation number that are approximately
classical. It is evident that black hole creation in particle collision at
super-Planckian energies is a result of classicalization, but there is no a
priory reason why this phenomenon must be limited to gravity. If the hierarchy
problem is solved by classicalization, the LHC has a chance of detecting a
tower of new resonances. The lowest-lying resonances must appear right at the
strong coupling scale in form of short-lived elementary particles. The heavier
members of the tower must behave more and more classically: they must be longer
lived and decay into higher numbers of soft quanta.
