Collapsing Bose-Einstein condensates beyond the Gross-Pitaevskii approximation

Journal Article · Tue Mar 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.033604· OSTI ID:20650455

Wuester, S; Hope, J J; Savage, C M ^[1]

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1. ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, Australian National University, Canberra ACT 0200 (Australia)

We analyze quantum field models of the bosenova experiment, in which {sup 85}Rb 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.

• OSTI ID: 20650455
• Journal Information: Physical Review. A, Vol. 71, Issue 3; Other Information: DOI: 10.1103/PhysRevA.71.033604; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BASIC INTERACTIONS
BOSE-EINSTEIN CONDENSATION
CORRECTIONS
CORRELATION FUNCTIONS
ENERGY LEVELS
HARTREE-FOCK METHOD
QUANTUM FIELD THEORY
RESONANCE
RUBIDIUM
RUBIDIUM 85