Rogue waves in the Davey-Stewartson equation

TL;DR

This paper derives and analyzes rogue wave solutions in the Davey-Stewartson-I equation, revealing complex interactions, patterns, and structures that enhance understanding of two-dimensional ocean surface waves.

Contribution

It introduces new rogue wave solutions in the Davey-Stewartson-I equation, including multi-rogue and higher-order rogue waves with novel patterns and interactions.

Findings

Fundamental rogue waves are line-shaped and transient.

Multi-rogue waves involve interactions with interesting curvy patterns.

Higher-order rogue waves exhibit novel features like parabolas and localized lumps.

Abstract

General rogue waves in the Davey-Stewartson-I equation are derived by the bilinear method. It is shown that the simplest (fundamental) rogue waves are line rogue waves which arise from the constant background with a line profile and then disappear into the constant background again. It is also shown that multi-rogue waves describe the interaction of several fundamental rogue waves. These multi-rogue waves also arise from the constant background and then decay back to it, but in the intermediate times, interesting curvy wave patterns appear. However, higher-order rogue waves are found to show more interesting features. Specifically, only part of the wave structure in the higher-order rogue waves rises from the constant background and then retreats back to it, and this transient wave exhibits novel patterns such as parabolas. But the other part of the wave structure comes from the far distance as a localized lump, which decelerates to the near field and interacts with the transient rogue wave, and is then reflected back and accelerates to the large distance again. These rogue-wave solutions have interesting implications for two-dimensional surface water waves in the ocean.