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Phys. Rev. Lett. 96, 020401 (2006) [4 pages]

Interaction-Driven Dynamics of ⁴⁰K-⁸⁷Rb Fermion-Boson Gas Mixtures in the Large-Particle-Number Limit

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C. Ospelkaus, S. Ospelkaus, K. Sengstock, and K. Bongs
Institut für Laserphysik, Luruper Chaussee 149, 22761 Hamburg, Germany

Received 7 July 2005; published 18 January 2006

Wehave studied effects of interspecies attraction in a Fermi-Bose mixtureover a large regime of particle numbers in the ⁴⁰K-⁸⁷Rbsystem. We report on the observation of a mean-field drivencollapse at critical particle numbers of 1.2×10⁶ ⁸⁷Rb atoms inthe condensate and 7.5×10⁵ ⁴⁰K atoms consistent with mean-field theoryfor a scattering length of a_FB=-284a₀. For large overcritical particlenumbers, we see evidence for revivals of the collapse. Partof our detailed study of the decay dynamics and mechanismsis a measurement of the (⁸⁷Rb-⁸⁷Rb-⁴⁰K) three-body loss coefficient K₃=(2.8±1.1)×10^-28 cm⁶/s,which is an important parameter for dynamical studies of thesystem.

©2006 The American Physical Society

URL:	http://link.aps.org/doi/10.1103/PhysRevLett.96.020401
DOI:	10.1103/PhysRevLett.96.020401
PACS:	03.75.Kk; 03.75.Ss; 32.80.Pj; 34.20.Cf 03.75.Kk Dynamic properties of Bose-Einstein condensates; collective and hydrodynamic excitations, superfluid flow 03.75.Ss Degenerate Fermi gases 32.80.Pj Optical cooling of atoms; trapping 34.20.Cf Interatomic potentials and forces YEAR: 2006
KEYWORDS:	potassium, rubidium, gas mixtures, fermion systems, Bose-Einstein condensation

REFERENCES (29)

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C. A. Regal et al., Phys. Rev. Lett. 92, 040403 (2004);

Phys. Rev. Lett. 92, 120403 (2004)

Phys. Rev. Lett. 93, 050401 (2004)

L. Viverit, Phys. Rev. A 66, 023605 (2002);

Phys. Rev. A 61, 053601 (2000)

Phys. Rev. B 65, 134519 (2002)

A. Albus et al., Phys. Rev. A 68, 023606 (2003);

Phys. Rev. A 69, 021601(R) (2004)

Phys. Rev. Lett. 93, 090406 (2004)

Phys. Rev. Lett. 92, 050401 (2004)

Phys. Rev. Lett. 94, 230404 (2005)

K. Mølmer, Phys. Rev. Lett. 80, 1804 (1998).
R. Roth, Phys. Rev. A 66, 013614 (2002).
C. A. Sackett et al., Phys. Rev. Lett. 82, 876 (1999);
G. Ferrari et al., Phys. Rev. Lett. 89, 053202 (2002).
G. Roati, F. Riboli, G. Modugno, and M. Inguscio, Phys. Rev. Lett. 89, 150403 (2002).
E. G. M. van Kempen et al., Phys. Rev. Lett. 88, 093201 (2002).
M. Modugno et al., Phys. Rev. A 68, 043626 (2003).
J. Goldwin et al., Phys. Rev. A 70, 021601(R) (2004).
S. Inouye et al., Phys. Rev. Lett. 93, 183201 (2004).
T. Karpiuk et al., Phys. Rev. Lett. 93, 100401 (2004).
K. Dieckmann et al., Phys. Rev. A 58, 3891 (1998).
B. DeMarco et al., Rev. Sci. Instrum. 70, 1967 (1999).
F. Ferlaino et al., Phys. Rev. Lett. 92, 140405 (2004).
S. K. Adhikari, Phys. Rev. A 70, 043617 (2004).
F. Matera, Phys. Rev. A 68, 043624 (2003).
D. Petrov, Phys. Rev. A 67, 010703(R) (2003).

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