  In this paper, we present results from a simulation of stellar core collapse,
bounce, and postbounce evolution with Boltzmann neutrino transport. We motivate
the development of our Boltzmann solver in light of the sensitivity of the
neutrino-heating core collapse supernova paradigm to details in the neutrino
transport, particularly near the neutrinospheres, where the neutrinos are
neither diffusing nor free streaming and a kinetic description is necessary,
and in light of the mixed outcomes and transport approximations used in all
prior supernova models in both one and two dimensions. We discuss the
implications of our findings for the supernova mechanism and future supernova
research. We also present the results of a Boltzmann transport prediction of
the early neutrino light curves in the model included here.
