ALTERNATIVE MODELS OF NEUTRON–ANTINEUTRON CONVERSION IN NUCLEI

Abstract

The models of the [Formula: see text] transition in medium and nuclei based on the diagram technique for direct reactions, potential description of [Formula: see text]-medium interaction and field-theoretical approach are considered. It is shown that for the [Formula: see text] transition in medium field-theoretical approach should be used. The lower limit on the free-space [Formula: see text] oscillation time τ is in the range: 1016 yr >τ>1.2⋅109 s .