  It is shown that there exists an intimate relationship between Bose Einstein
correlations and quantum field theory. On the one hand several essential
aspects of BEC cannot be understood and even formulated without second
quantization. On the other hand BEC can serve as a unique tool in the
investigation of modern field theory and in particular of the standard model.
Some new developments on this subject related to multiparticle production and
squeezed states are also discussed.
