Mixed bubbles in a one-dimensional Bose-Bose mixture

Stürmer, P.; Tengstrand, M. Nilsson; Reimann, S. M.

doi:10.1103/physrevresearch.4.043182

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2024

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Cited by 9 publications

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“…Besides quantum droplets, bosonic mixtures may also uncover bright solitons [20], mixed bubbles [21] near the miscible-immiscible threshold, experimentally seen darkbright solitons [22,23], also predicted for highly magnetic species [24].…”

Section: Introductionmentioning

confidence: 84%

Propagation properties and stability of dark solitons in weakly interacting Bose–Bose droplets

Kopyciński,

Tüzemen,

Górecki

et al. 2024

J. Phys. B: At. Mol. Opt. Phys.

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We investigate dark solitons in two-component Bose systems with competing interactions in one dimension. Such a system hosts a liquid phase stabilized by the beyond-mean field corrections. Using the generalized Gross-Pitaevskii equation, we reveal the presence of two families of solitonic solutions. The solitons in both of them can be engineered to be arbitrarily wide. One family of solutions, however, has an anomalous dispersion relation, and our analyses show one of its branches is unstable. We find a critical velocity that demarcates the stable from unstable solutions. Nonetheless, grey anomalous solitons can exist inside quantum droplets and can be treated as solitonic excitations thereof.

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