Abstract
We demonstrate the existence and stability of one-dimensional (1D) topological kink configurations immersed in higher-dimensional bosonic gases and nonlinear optical setups. Our analysis pertains, in particular, to the two- and three-dimensional extended Gross-Pitaevskii models with quantum fluctuations describing droplet-bearing environments but also to the two-dimensional cubic-quintic nonlinear Schrödinger equation containing higher-order corrections to the nonlinear refractive index. Contrary to the generic dark soliton transverse instability, the kink structures are generically robust under the interplay of low-amplitude attractive and high-amplitude repulsive interactions. A quasi-1D effective potential picture dictates the existence of these defects, while their stability is obtained numerically and analytically through linearization analysis and direct dynamics in the presence of external fluctuations showcasing their unprecedented resilience. These "generic"(across different models) findings should be detectable in current cold atom and optics experiments, offering insights toward controlling topological excitations.
Recommended Citation
S. I. Mistakidis et al., "Generic Transverse Stability of Kink Structures in Atomic and Optical Nonlinear Media with Competing Attractive and Repulsive Interactions," Physical Review Letters, vol. 134, no. 12, article no. 123402, American Physical Society, Mar 2025.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.134.123402
Department(s)
Physics
International Standard Serial Number (ISSN)
1079-7114; 0031-9007
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 American Physical Society, All rights reserved.
Publication Date
28 Mar 2025
Comments
Department of Physics, Harvard University, Grant PHY-2110030