S. Grossmann et M. Holthaus, BOSE-EINSTEIN CONDENSATION AND CONDENSATE TUNNELING, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 50(4-5), 1995, pp. 323-326
We consider Bose-Einstein condensation in a small cube and describe ef
fects induced by the confinement. We also sketch an analogue of the Jo
sephson effect for neutral particles, which can be realized when two a
lmost degenerate states in a double well potential are occupied by a m
acroscopic number of Bosons.