Abstract
In evolution equations for a complex amplitude, the equation for the phase is much more intricate than for the amplitude. Nevertheless, general methods should be applicable to both variables. In the example of the traveling-wave reduction of the complex cubic-quintic Ginzburg-Landau (CGL5) equation, we explain how to overcome the difficulties arising in two methods: (1) the criterion that the sum of residues of an elliptic solution is zero and (2) the construction of a first-order differential equation admitting a given equation as a differential consequence (subequation method).
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Prepared from an English manuscript submitted by the authors; for the Russian version, see Teoreticheskaya i Matematicheskaya Fizika, Vol. 172, No. 2, pp. 224–235, August, 2012.
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Conte, R., Ng, TW. Detection and construction of an elliptic solution of the complex cubic-quintic Ginzburg-Landau equation. Theor Math Phys 172, 1073–1084 (2012). https://doi.org/10.1007/s11232-012-0096-4
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DOI: https://doi.org/10.1007/s11232-012-0096-4