Rational solutions to multicomponent Yajima-Oikawa systems: from two dimension to one dimension

TL;DR

This paper derives explicit rational solutions for multicomponent Yajima-Oikawa systems in 2D and 1D, revealing complex rogue wave patterns, interactions, and classifications, advancing understanding of nonlinear wave phenomena.

Contribution

It provides the first explicit rational solutions for multicomponent YO systems in both two and one dimensions, including classifications of rogue wave patterns and their dynamic behaviors.

Findings

Localized lumps with three patterns: bright, intermediate, dark

Multiple rogue wave interactions with curvy wave patterns

Higher-order rogue waves exhibit lump-to-parabola transitions

Abstract

Exact explicit rational solutions of two- and one- dimensional multicomponent Yajima-Oikawa (YO) systems, which contain multi-short-wave components and single long-wave one, are presented by using the bilinear method. For two-dimensional system, the fundamental rational solution first describes the localized lumps, which have three different patterns: bright, intermediate and dark states. Then, rogue waves can be obtained under certain parameter conditions and their behaviors are also classified to above three patterns with different definition. It is shown that the simplest (fundamental) rogue waves are line localized waves which arise from the constant background with a line profile and then disappear into the constant background again. In particular, two-dimensional intermediate and dark counterparts of rogue wave are found with the different parameter requirements. We demonstrate that multirogue waves describe the interaction of several fundamental rogue waves, in which interesting curvy wave patterns appear in the intermediate times. Different curvy wave patterns form in the interaction of different types fundamental rogue waves. Higher-order rogue waves exhibit the dynamic behaviors that the wave structures start from lump and then retreats back to it, and this transient wave possesses the patterns such as parabolas. Furthermore, different states of higher-order rogue wave result in completely distinguishing lumps and parabolas. Moreover, one-dimensional rogue wave solutions with three states are constructed through the further reduction. Specifically, higher-order rogue wave in one dimensional case is derived under the parameter constraints.