Year: 2026
Type: article
Abstract: We experimentally generate sine-Gordon-like solitons in a spin-1 spinor BEC utilizing a robust and reproducible local phase-imprinting scheme. We find that the soliton velocity can be tuned by the effective quadratic Zeeman shift. This enables the investigation of controlled soliton interactions, in which we observe the characteristic elastic collision behavior of the integrable sine-Gordon model. The spatial displacement-the so-called phase shift-between incoming and outgoing solitons, the signature of their pairwise interaction, is found to be in quantitative agreement with numerical spin-1 simulations within the error bars. These results establish spinor BECs as a highly controllable experimental platform for studying aspects of the dynamics of sine-Gordon-like models.
Source: Physical Review Letters
DOI: 10.1103/bpl2-y7ls
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1692958442, G1773154091, G2628649996, G402306430, G4028087979, Collaborative Research: New Directions in Vortex Dynamics: from Theory and Computation to Physical Experiments, EXC 2181: STRUKTUREN: Emergenz in Natur, Mathematik und komplexen Daten, SFB 1225: Isolierte Quantensysteme und Universalität unter extremen Bedingungen (ISOQUANT)
OpenAlex ID: W7164510174