We propose an experiment which can demonstrate quantum correlations in a
physical scenario as discussed in the seminal work of Einstein, Podolsky and
Rosen. Momentum-entangled massive particles are produced via the four-wave
mixing process of two colliding Bose-Einstein condensates. The particles'
quantum correlations can be shown in a double double-slit experiment or via
ghost interference.Comment: 5 pages, 5 figures, published versio
