AN INCONSISTENCY IN THE SIMULATION OF BOSE-EINSTEIN CORRELATIONS

We show that the formalism commonly used to implement Bose-Einstein co rrelations in Monte-Carlo simulations can lead to values of the two-pa rticle correlator significantly smaller than unity, in the case of sou rces with strong position-momentum correlations. This is more pronounc ed when the phase space of the emitted particles is strongly reduced b y experimental acceptance or kinematic analysis selections. It is inco nsistent with general principles from the coherent state formalism acc ording to which the Bose-Einstein correlator is larger than unity. Thi s inconsistency seems to be rooted in the fact that quantum mechanical localization properties are not taken into account properly.