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Quasi-two-dimensional soliton in a self-repulsive spin-orbit-coupled dipolar binary condensate
1Universidade Estadual Paulista (UNESP), Instituto de Física Teórica, 01.140-070 São Paulo, São Paulo, Brazil.
Physical Review. E
|March 20, 2026
Summary
This study explores soliton formation in Bose-Einstein condensates (BECs) with spin-orbit (SO) coupling. Different soliton types emerge based on SO coupling strength and interactions, including novel lattice solitons.
Area of Science:
- Quantum physics
- Condensed matter physics
- Nonlinear dynamics
Background:
- Bose-Einstein condensates (BECs) are quantum states of matter.
- Spin-orbit (SO) coupling influences BEC properties.
- Solitons are stable, localized wave packets.
Purpose of the Study:
- Investigate soliton formation in quasi-2D binary BECs.
- Analyze the impact of SO coupling and dipolar interactions.
- Characterize different types of emergent solitons.
Main Methods:
- Numerical simulations using the mean-field Gross-Pitaevskii equation.
- Analysis of BECs with both nondipolar and dipolar interactions.
- Systematic variation of spin-orbit coupling strength.
Main Results:
- Weak SO coupling yields multiring, asymmetric, and stripe solitons in nondipolar BECs.
- Intermediate SO coupling introduces square-lattice solitons alongside asymmetric and stripe solitons.
- Dipolar interactions in the quasi-2D plane lead to only asymmetric and stripe solitons.
Conclusions:
- SO coupling and interaction types significantly alter soliton formation in BECs.
- Novel square-lattice solitons emerge at intermediate SO coupling.
- Dipolar interactions simplify the soliton landscape compared to nondipolar cases.
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