  The quantum reality problem is that of finding a mathematically precise
definition of a sample space of configurations of beables, events, histories,
paths, or other mathematical objects, and a corresponding probability
distribution, for any given closed quantum system. Given a solution, we can
postulate that physical reality is described by one randomly chosen
configuration drawn from the sample space. For a physically sensible solution,
this postulate should imply quasiclassical physics in realistic models. In
particular, it should imply the validity of Copenhagen quantum theory and
classical dynamics in their respective domains. A Lorentzian solution applies
to relativistic quantum theory or quantum field theory in Minkowski space and
is defined in a way that respects Lorentz symmetry. We outline a new solution
to the non-relativistic and Lorentzian quantum reality problems, and associated
new generalizations of quantum theory.
