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An so (3, ℝ) Counterpart of the Dirac Soliton Hierarchy and its Bi-Integrable Couplings

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Abstract

We derive a counterpart hierarchy of the Dirac soliton hierarchy from zero curvature equations associated with a matrix spectral problem from so (3, ℝ). Inspired by a special class of non-semisimple loop algebras, we construct a hierarchy of bi-integrable couplings for the counterpart soliton hierarchy. By applying the variational identities which cope with the enlarged Lax pairs, we generate the corresponding Hamiltonian structure for the hierarchy of the resulting bi-integrable couplings. To show Liouville integrability, infinitely many commuting symmetries and conserved densities are presented for the counterpart soliton hierarchy and its hierarchy of bi-integrable couplings.

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Acknowledgments

The work was supported in part by NSF under the grant DMS-1301675, NSFC under the grants 11371241, 11371326, 11271008 and 61072147), Zhejiang Innovation Project of China (Grant no. T200905), and the First-class Discipline of Universities in Shanghai and the Shanghai Univ. Leading Academic Discipline Project (No. A.13-0101-12-004). This paper was also supported by the China Scholarship Council (File No. 201306890028). The authors are also grateful to D. J. Zhang for reading the paper, Y.Q.Yao, E. A. Appiah, C. X. Li, S. Manukure, M. Mcanally, S. F. Shen and S. M. Yu for their stimulating discussions.

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Zhang, WY., Ma, WX. An so (3, ℝ) Counterpart of the Dirac Soliton Hierarchy and its Bi-Integrable Couplings. Int J Theor Phys 53, 4211–4222 (2014). https://doi.org/10.1007/s10773-014-2172-z

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  • DOI: https://doi.org/10.1007/s10773-014-2172-z

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