Abstract
In this paper, we use the Riemann–Hilbert (RH) approach to examine the integrable three-coupled Lakshmanan–Porsezian–Daniel (LPD) model, which describes the dynamics of alpha helical protein with the interspine coupling at the fourth-order dispersion term. Through the spectral analysis of Lax pair, we construct the higher-order matrix RH problem for the three-coupled LPD model, when the jump matrix of this particular RH problem is a \(4\times 4\) unit matrix, the exact N-soliton solutions of the three-coupled LPD model can be exhibited. As special examples, we also investigate the nonlinear dynamical behaviors of the single-soliton, two-soliton, three-soliton and breather soliton solutions. Finally, an integrable generalized N-component LPD model with its linear spectral problem is discussed.
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Acknowledgements
The authors would like to express our sincere thanks to every member in our discussion group for their valuable comments.
Funding
This study was funded by National Natural Science Foundation of China (grant numbers 12147115, 11835011 and 11975145), by Natural Science Foundation of Anhui Province (grant number 2108085QA09), by Postdoctoral Fund of Zhejiang Normal University (grant number ZC304021909), by Key Projects of Natural Science Research in Colleges and Universities in Anhui Province (grant number KJ2021B03).
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Hu, BB., Lin, J. & Zhang, L. Dynamic behaviors of soliton solutions for a three-coupled Lakshmanan–Porsezian–Daniel model. Nonlinear Dyn 107, 2773–2785 (2022). https://doi.org/10.1007/s11071-021-07135-2
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DOI: https://doi.org/10.1007/s11071-021-07135-2
Keywords
- Lax pair
- Riemann–Hilbert approach
- Three-coupled Lakshmanan–Porsezian–Daniel model
- Soliton solutions
- Dynamic behaviors