  Back-to-Back Correlations of particle-antiparticle pairs are related to the
in-medium mass-modification and squeezing of the quanta involved. They are
predicted to appear when hot and dense hadronic matter is formed in high energy
nucleus-nucleus collisions. The survival and magnitude of the Back-to-Back
Correlations of boson-antiboson pairs generated by in-medium mass modifications
are studied here in the case of a thermalized, finite-sized, spherically
symmetric expanding medium. We show that the BBC signal indeed survives the
finite-time emission, as well as the expansion and flow effects, with
sufficient intensity to be observed at RHIC.
