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Phys. Rev. Lett. 89, 110401 (2002) [4 pages]

Dynamics of Dark Solitons in Elongated Bose-Einstein Condensates

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A. Muryshev1, G. V. Shlyapnikov1,2,3, W. Ertmer4, K. Sengstock4,5, and M. Lewenstein6
1Russian Research Center Kurchatov Institute, Kurchatov Square, 123182 Moscow, Russia
2FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
3Laboratoire Kastler Brossel, 24 rue Lhomond, F-75231 Paris Cedex 05, France
4Institut für Quantenoptik, Universität Hannover, D-30167 Hannover, Germany
5Institut für Laserphysik, Universität Hamburg, 20355 Hamburg, Germany
6Institut für Theoretische Physik, Universität Hannover, D-30167 Hannover, Germany

Received 27 November 2001; published 21 August 2002

We find two types of moving dark soliton textures in elongated condensates: nonstationary kinks and proper dark solitons. The latter have a flat notch region and we obtain the diagram of their dynamical stability. At finite temperatures the dynamically stable solitons decay due to the thermodynamic instability. We develop a theory of their dissipative dynamics and explain experimental data.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.110401
DOI:
10.1103/PhysRevLett.89.110401
PACS:
03.75.Fi
 
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