Collisional-inhomogeneity-induced generation of matter-wave dark solitons

2010/07/15 by Chen Wang, C. Wang, P. G. Kevrekidis +3 · 15 citations
Chemistry · Physics and Astronomy · #Advanced Frequency and Time Standards #Astrophysics #Bose–Einstein condensate #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Dark matter #Instability #Matter wave #Mechanics #Phenomenology (philosophy) #Physics #Quantum #Quantum electrodynamics #Quantum mechanics #Scattering #Spectroscopy and Laser Applications #Vortex #cond-mat.quant-gas #nlin.PS

paper · pdf · doi:10.1016/j.physleta.2010.07.028

published in Physics Letters A 374(37), 3863-3868 (Elsevier BV) · 8 pages, 5 Figures, Physics Letters A (in press)

arxiv created 2010/07/15 · openalex publication_date 2010/07/20 · arxiv updated 2015/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose an experimentally relevant protocol for the controlled generation of matter-wave dark solitons in atomic Bose-Einstein condensates (BECs). In particular, using direct numerical simulations, we show that by switching-on a spatially inhomogeneous (step-like) change of the s-wave scattering length, it is possible to generate a controllable number of dark solitons in a quasi-one-dimensional BEC. A similar phenomenology is also found in the two-dimensional setting of "disk-shaped" BECs but, as the solitons are subject to the snaking instability, they decay into vortex structures. A detailed investigation of how the parameters involved affect the emergence and evolution of solitons and vortices is provided.

Citations

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