Ye. Kim et Al. Zubarev, STABILITY OF THE SOLUTION OF THE NONLINEAR SCHRODINGER-EQUATION FOR BOSE-EINSTEIN CONDENSATION, Physics letters. A, 246(5), 1998, pp. 389-393
We investigate the stability of the Bose-Einstein condensate (BEC) for
the case of atoms with negative scattering lengths at zero temperatur
e using the Ginzburg-Pitaevskii-Gross (GPG) stationary theory. we have
found a new exact equation for determining an upper bound of the crit
ical numbers N-cr of atoms required for a metastable state to exist. (
C) 1998 Elsevier Science B.V.