Dynamics and thermodynamics in spinor quantum gases

H. Schmaljohann; M. Erhard; J. Kronjäger; K. Sengstock; K. Bongs

doi:10.1007/s00340-004-1664-6

Dynamics and thermodynamics in spinor quantum gases

H. Schmaljohann, M. Erhard, J. Kronjäger, K. Sengstock, K. Bongs^*

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

We discuss magnetism in spinor quantum gases theoretically and experimentally with emphasis on temporal dynamics of the spinor order parameter in the presence of an external magnetic field. In a simple coupled Gross-Pitaevskii picture we observe a dramatic suppression of spin dynamics due to quadratic Zeeman "dephasing". In view of an inhomogeneous density profile of the trapped condensate we present evidence of spatial variations of spin dynamics. In addition we study spinor quantum gases as a model system for thermodynamics of Bose-Einstein condensation. As a particular example we present measurements on condensate magnetisation due to the interaction with a thermal bath.

Original language	English
Pages (from-to)	1001-1007
Number of pages	7
Journal	Applied Physics B: Lasers and Optics
Volume	79
Issue number	8 SPEC. ISS.
DOIs	https://doi.org/10.1007/s00340-004-1664-6
Publication status	Published - Dec 2004

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
General Physics and Astronomy

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10.1007/s00340-004-1664-6

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author = "H. Schmaljohann and M. Erhard and J. Kronj{\"a}ger and K. Sengstock and K. Bongs",

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AU - Schmaljohann, H.

AU - Erhard, M.

AU - Kronjäger, J.

AU - Sengstock, K.

AU - Bongs, K.

PY - 2004/12

Y1 - 2004/12

N2 - We discuss magnetism in spinor quantum gases theoretically and experimentally with emphasis on temporal dynamics of the spinor order parameter in the presence of an external magnetic field. In a simple coupled Gross-Pitaevskii picture we observe a dramatic suppression of spin dynamics due to quadratic Zeeman "dephasing". In view of an inhomogeneous density profile of the trapped condensate we present evidence of spatial variations of spin dynamics. In addition we study spinor quantum gases as a model system for thermodynamics of Bose-Einstein condensation. As a particular example we present measurements on condensate magnetisation due to the interaction with a thermal bath.

AB - We discuss magnetism in spinor quantum gases theoretically and experimentally with emphasis on temporal dynamics of the spinor order parameter in the presence of an external magnetic field. In a simple coupled Gross-Pitaevskii picture we observe a dramatic suppression of spin dynamics due to quadratic Zeeman "dephasing". In view of an inhomogeneous density profile of the trapped condensate we present evidence of spatial variations of spin dynamics. In addition we study spinor quantum gases as a model system for thermodynamics of Bose-Einstein condensation. As a particular example we present measurements on condensate magnetisation due to the interaction with a thermal bath.

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JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 8 SPEC. ISS.

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Dynamics and thermodynamics in spinor quantum gases

Abstract

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