- Accepted Paper
Two-dimensional solitons in extended Gross-Pitaevskii equation models with Lee-Huang-Yang corrections
Phys. Rev. A - Accepted 2 October, 2026
DOI: https://doi.org/10.1103/l746-zrv5
Phys. Rev. A - Accepted 2 October, 2026
DOI: https://doi.org/10.1103/l746-zrv5
We investigate the existence and dynamics of two-dimensional solitary waves in the extended Gross-Pitaevskii equation featuring logarithmic mean-field and Lee-Huang-Yang interactions. In the modulationally stable regime of the background, we employ suitable multiscale asymptotic methods to derive effective nonlinear integrable models corresponding to the Kadomtsev-Petviashvili and Davey-Stewartson equations. Based on these reduced models, we construct approximate analytical solutions describing line solitons, algebraically localized lump solitons, ring solitons, and exponentially localized dromions embedded on the uniform modulationally stable background. The dynamics of these solutions is monitored through numerical simulations. Line, lump and ring solitons stay closest to the theoretical predictions, although progressively deviate due to the emergence of small-amplitude radiation, while dromions depart from their analytical waveform the most, although they roughly maintain their shape. Our results unveil unprecedented multidimensional soliton solutions in models featuring the competition of mean-field and quantum fluctuations; the presented soliton states show long lifetimes and, as such, are amenable to current ultracold atom experiments.
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