Bose-Einstein correlations as reflection of correlations of fluctuations

Bose-Einstein correlations (BEC) observed between identical bosons produced in high energy multiparticle collisions are regarded as very important tool in investigations of multiparticle production processes. We present here their stochastic feature stressing the fact that they can be regarded as a reflection of correlations of fluctuations present in hadronizing system. We show in particular that such approach allows for simple modelling of BEC in numerical event generators used to describe the multiparticle production processes at high energy collisions.