Proposition of numerical modelling of BEC

We propose extension of the numerical method to model effect of Bose-Einstein correlations (BEC) observed in hadronization processes which allows for calculations not only correlation functions $C_2(Q_{inv})$ (one-dimensional) but also corresponding to them $C_2(Q_{x,y,z})$ (i.e., three-dimensional). The method is based on the bunching of identical bosonic particles in elementary emitting cells (EEC) in phase space in manner leading to proper Bose-Einstein form of distribution of energy (this was enough to calculate $C_2(Q_{inv})$). To obtain also $C_2(Q_{x,y,z})$ one has to add to it also symmetrization of the multiparticle wave function to properly correlate space-time locations of produced particles with their energy-momentum characteristics.Comment: 7 pages, 2 figures, poster presented at QM2005, to be published in Nukleonika (2006); acknowledgements adde

Bose-Einstein Correlations as correlations of fluctuations

The limitations of the recently proposed new method of numerical modelling of Bose-Einstein correlations (BEC) are explicitly demonstrated. It is then argued that BEC should still be considered as emerging from the correlations of fluctuations, however they have to be modelled first in any Monte Carlo event generator (MCEG) and not added {\it a posteriori} to the existing output of some MCEG.Comment: Presented at XXXII International Symposium on Multiparticle Dynamics, Alushta, Crimea, Ukraine, September 7-13, 2002. To be published by World Scientific (2003) (style file ws-procs9x6.cls attached