 Nontrivial coherent structures in spatially inhomogeneous mixed coupled Gross–Pitaevskii system with Rabi couplingS.P. Godwin Rajadoss and T. Kanna Chaos, Solitons & Fractals, 2026, vol. 209, issue P1 Abstract: Spatially inhomogeneous Rabi coupled two component Gross–Pitaevskii equation with mixed signs of nonlinearity coefficients is studied. For this purpose we employ a hyperbolic rotational transformation, unlike the 2-GP system with Rabi coupling with focusing/defocusing nonlinearity, where standard rotational transformation is used. Then we apply a similarity transformation and study the intensity dynamics of coupled bright and bright–dark solitons, obtained through the Hirota’s direct method. A variety of novel coherent configurations, such as tilted dromion with feeble wings, beating tilted patterns, a breaking soliton, shifted soliton trains (representing soliton fragmentation), triple-sister dromions, coherent dromion-like structure are found. Further, non-pair wise elastic interaction of combined oscillating bright–dark soliton with a dark soliton, striped soliton train and train of dromions with ripples are also observed. In addition, a soliton tunneling phenomenon is also observed in the dark component. Keywords: Solitons; Gross–Pitaevskii equation; Rabi coupling; Atomic condensates (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:209:y:2026:i:p1:s0960077926005308 DOI: 10.1016/j.chaos.2026.118389 Access Statistics for this article Chaos, Solitons & Fractals is currently edited by Stefano Boccaletti and Stelios Bekiros More articles in Chaos, Solitons & Fractals from Elsevier |
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