Bose Einstein Correlations and Quantum Field Theory

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.