Abstract
We present calculations that reveal an anisotropic expansion of the non-condensed component in Na clouds cooled below the critical temperature for Bose-Einstein condensation and subsequently released from the asymmetric magnetic trapping potential. Each atomic cloud is composed of a central condensate and a more extended distribution of non-condensed “thermal” atoms. The interaction between the condensed and non-condensed components of the cloud is found to influence their rates of expansion. The noncondensed component is accelerated and the condensed component is decelerated due to the repulsive interaction between the atoms, with the largest effects occuring in the tightly confined direction of the asymmetric trap.
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References
M. H. Anderson et al., Science 269, 198 (1995).
K. B. Davis et al., Phys. Rev. Lett. 75, 3969 (1995).
C. C. Bradley et al., Phys. Rev. Lett. 78, 985 (1997).
L. V. Hau et al., in Photonic, Electronic, and Atomic Collisions, Invited papers of the XX.ICPEAC, Vienna, Austria, July 1997, eds F. Aumayr and HP. Winter, (World Scientific, Singapore, 1998).
U. Ernst et al., Europhys. Lett. 41, 1 (1998).
Y. Castin and R. Dum, Phys. Rev. Lett. 77, 5315 (1996).
M. J. Holland et al., Phys. Rev. Lett. 78, 3801 (1997).
A. Rahrl et al., Phys. Rev. Lett. 78, 4143 (1997); H. Wallis and H. Steck, Europhys. Lett, 41, 477 (1998).
L. V. Hau et al., Phys. Rev. A 58, R54 (1998).
S. Giorgini et al., J. Low Temp. Phys. 109, 309 (1997)
E. Tiesinga et al., J. Res. Natl. Inst. Stand. Tech. 101, 505 (1996).
J. M. Feagin, Quantum Methods with Mathematica (Springer-Verlag, New York, 1994), pp. 164, and references therein.
At densities of 1014/cm3 or above, the interaction between the thermal atoms is not negligible. See H. Wu and E. Arimondo, Europhys. Lett., 43, 141 (1998)
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Liu, C., Buschi, B.D., Dutton, Z., Vestergaard Hau, L. (1999). Anisotropic Expansion of Finite Temperature Bose Gases — Emergence of Interaction Effects Between Condensed and Non-Condensed Atoms. In: Whelan, C.T., Dreizler, R.M., Macek, J.H., Walters, H.R.J. (eds) New Directions in Atomic Physics. Physics of Atoms and Molecules. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4721-1_41
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DOI: https://doi.org/10.1007/978-1-4615-4721-1_41
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