Collisions of Dark Solitons in Elongated Bose-Einstein Condensates

Journal Article · Fri Sep 19 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.120406· OSTI ID:21179719

Stellmer, S; Becker, C; Soltan-Panahi, P; Richter, E -M; Doerscher, S; Baumert, M; Kronjaeger, J; Sengstock, K ^[1]; Bongs, K ^[2]

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1. Institut fuer Laser-Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)
2. MUARC, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)

We present experimental data showing the head-on collision of dark solitons generated in an elongated Bose-Einstein condensate. No discernable interaction can be recorded, in full agreement with the fundamental theoretical concepts of solitons as mutually transparent quasiparticles. Our soliton generation technique allows for the creation of solitons with different depths; hence, they can be distinguished and their trajectories be followed. Simulations of the 1D-Gross-Pitaevskii equation have been performed to compare the experiment with a mean-field description.

• OSTI ID: 21179719
• Journal Information: Physical Review Letters, Vol. 101, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.101.120406; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
EQUATIONS
MEAN-FIELD THEORY
SIMULATION
SOLITONS