Neutrino Oscillations in the Model of Interaction of Spinor Fields with Zero-Range Potential Concentrated on a Plane

Symanzik’s approach to the description of quantum field systems in an inhomogeneous space-time is used to construct a model for the interaction of neutrino fields with matter. In this way, the problem of the influence of strong inhomogeneities of the medium on the processes of oscillations is considered. As a simple example, a model of neutrino scattering on a material plane is investigated. Within this model, in the collisions of particles with planes, a special filtration mechanism can be formed. It has a significant impact on the dynamics of subsequent neutrino oscillations which are analogous to the Mikheev-Smirnov-Wolfenstein effect at propagation of these particles in an adiabatic medium. Taking into account the possibility of the filtration process in a highly inhomogeneous environment can be useful in planning and carrying out experimental studies of neutrino physics. It can also be considered by investigations of the role of neutrino in astrophysical processes by means of numerical simulations methods.

Fields, Funerals and Furnaces: On the Use of Fire during the Pre-Roman Iron Age on the Island of Gotland

By studying the material culture of the island of Gotland, one can conclude that the use of fire was integrated into the lives of the Pre-Roman people. Agricultural land was cleared by fire and cremation was a part of the burial tradition. Fire converted clay into ceramics, wood into charcoal and bog ore into iron. By being subjected to the flames human beings, objects and the landscape were created and/or trans formed. This paper presents fossilized field systems, burial grounds and areas with iron production as places for this physical transformation, as well as places for the creation of bonds between people.