Abstract
We analytically describe solitons and spin waves in the helicoidal structure of magnets without an inversion center using the “dressing” method in the framework of the sine-Gordon model. Analyzing the nonlinear dynamics of spin waves in the helicoidal-structure background reduces to solving linear integral equations on a Riemann surface generated by the superstructure. We obtain spectral expansions of integrals of motion with the soliton and spin-wave contributions separated.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 173, No. 2, pp. 268–292, November, 2012.
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Kiselev, V.V., Raskovalov, A.A. Nonlinear dynamics of a quasi-one-dimensional helicoidal structure. Theor Math Phys 173, 1565–1586 (2012). https://doi.org/10.1007/s11232-012-0133-3
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DOI: https://doi.org/10.1007/s11232-012-0133-3