On the interference of identical pions produced in collisions of relativistic nuclei

The problem of study of interference correlations of identical pion pairs is discussed. Some properties of pair correlations of identical pions are considered which are due to limited dimensions of singleparticle sources, possible existence of multiparticle sources, and to the effect of refraction index of nuclear matter and with pion scattering on nuclear nucleons. With account for these properties formulas of amplitude of two identical pion production and probability of the process are obtained