TY - JOUR
T1 - Collapsing Bose-Einstein condensates beyond the Gross-Pitaevskii approximation
AU - Wüster, S.
AU - Hope, J. J.
AU - Savage, C. M.
PY - 2005/3/1
Y1 - 2005/3/1
N2 - We analyze quantum field models of the bosenova experiment, in which 85Rb Bose-Einstein condensates were made to collapse by switching their atomic interactions from repulsive to attractive. Specifically, we couple the lowest order quantum field correlation functions to the Gross-Pitaevskii function, and solve the resulting dynamical system numerically. Comparing the computed collapse times with the experimental measurements, we find that the calculated times are much larger than the measured values. The addition of quantum field corrections does not noticeably improve the agreement compared to a pure Gross-Pitaevskii theory.
AB - We analyze quantum field models of the bosenova experiment, in which 85Rb Bose-Einstein condensates were made to collapse by switching their atomic interactions from repulsive to attractive. Specifically, we couple the lowest order quantum field correlation functions to the Gross-Pitaevskii function, and solve the resulting dynamical system numerically. Comparing the computed collapse times with the experimental measurements, we find that the calculated times are much larger than the measured values. The addition of quantum field corrections does not noticeably improve the agreement compared to a pure Gross-Pitaevskii theory.
UR - http://www.scopus.com/inward/record.url?scp=18544378414&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.71.033604
DO - 10.1103/PhysRevA.71.033604
M3 - Article
SN - 1050-2947
VL - 71
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 033604
ER -