Speaker
Patrick Peter
Description
Cosmological perturbations are said to be seeded by
quantum
vacuum fluctuations of the inflaton and metric field. Yet,
they
are used successfully in numerical simulations as
classical sources
since squeezing and decoherence render their quantum
distribution
undistinguishable from a classical stochastic distribution.
However,
an actual realization did take place at some stage, from
which large
scale structure subsequently developed. I will discuss
two extensions
of quantum mechanics, hidden variables and dynamical
collapse,
in the framework of which the measurement problem is
naturally
solved (and the Born rule recovered) and apply those to
cosmological
perturbation theory.
