Quantum mechanical localization effects for Bose-Einstein correlations

For a set of N identical massive boson wavepackets with optimal initialquantum mechanical localization, we calculate the Hanbury-Brown/Twiss (HBT)two-particle correlation function. Our result provides an algorithm forcalculating one-particle spectra and two-particle correlations from anarbitrary phase space occupation (q_i,p_i,t_i)_{i=1,N} as e.g. returned byevent generators. It is a microscopic derivation of the result of the coherentstate formalism, providing explicit finite multiplicity corrections. Both theone- and two-particle spectra depend explicitly on the initial spatialwavepacket width which parametrizes the quantum mechanical wavepacketlocalization. They provide upper and lower bounds which suggest that arealistic value for this width has the order of the Compton wavelength.Comment: 4 pages, RevTe