COHERENT STATES, PION CORRELATIONS, AND SKYRMIONS IN THE SEMICLASSICAL MODELS OF NUCLEON-ANTINUCLEON ANNIHILATION

We do not want to provide a technical review but a cultural outlook ab out topics of general physical interest. While it is rather natural to consider (N) over bar N annihilation as a microscopic pion factory, l ess obvious perhaps is the fact that classical pion waves may be gener ated as from an antenna. What is a pion wave? What is the relation wit h pions detected by counters? Remember the duality between electromagn etic waves and the bright spots on a photographic plate!