  To explain the currently observed accelerated expansion of the universe, a
large number of different theoretical models are presently being discussed. In
one way or another, all of these contain `new physics', though at different
levels. The big question is how to select out of infinitely many possible
models the right one. Here we discuss a possibility that has so far been
somewhat neglected, namely that the new physics underlying dark energy arises
out of a gravitationally active amendment of the electroweak and strong sector
of the standard model. This amendment basically consists of a rapidly
fluctuating gravitationally active dynamics of vacuum fluctuations with a
cutoff of the order of the neutrino mass scale. We consider a concrete model
for this based on second-quantized self-interacting scalar fields, which evolve
in a chaotic way. It is shown that expectations with respect to the chaotic
dynamics yield statements on the observed numerical values of the electroweak
coupling constants with amazing precision, thus providing evidence for the
physical relevance of this model.
