Rogue waves in a two-component Manakov system with variable coefficients and an external potential

TL;DR

This paper constructs and analyzes rogue wave solutions in a variable-coefficient two-component Manakov system with external potential, relevant to nonlinear optics and Bose-Einstein condensates, revealing diverse rogue wave behaviors.

Contribution

It introduces a similarity transformation linking variable-coefficient and constant-coefficient Manakov systems, enabling exact rogue wave solutions in complex settings.

Findings

Exact two-component Peregrine and dromion rogue wave solutions obtained.

Rogue wave dynamics analyzed for various parameter choices.

Classification of rogue waves based on a control parameter.

Abstract

We construct rogue waves (RWs) in a coupled two-mode system with the self-focusing nonlinearity of the Manakov type (equal SPM and XPM coefficients), spatially modulated coefficients, and a specially designed external potential. The system may be realized in nonlinear optics and Bose-Einstein condensates. By means of a similarity transformation, we establish a connection between solutions of the coupled Manakov system with spatially-variable coefficients and the basic Manakov model with constant coefficients. Exact solutions in the form of two-component Peregrine and dromion waves are obtained. The RW dynamics is analyzed for different choices of parameters in the underlying parameter space. Different classes of RW solutions are categorized by means of a naturally introduced control parameter which takes integer values.