MULTI-LINE SOLITON SOLUTIONS FOR THE TWO-DIMENSIONAL NONLINEAR HIROTA EQUATION

Аннотация

At present, the question of studying multidimensional nonlinear integrable equations in the
framework of the theory of solitons is very interesting to foreign and Kazakh scientists. Many physical phenomena
that occur in nature can be described by nonlinearly integrated equations. Finding specific solutions to such
equations plays an important role in studying the dynamics of phenomena occurring in various scientific and
engineering fields, such as solid state physics, fluid mechanics, plasma physics and nonlinear optics. There are
several methods for obtaining real and soliton, soliton-like solutions of such equations: the inverse scattering method,
the Hirota’s bilinear method, Darboux transformation methods, the tanh-coth and the sine-cosine methods. In our
work, we studied the two-dimensional Hirota equation, which is a modified nonlinear Schrödinger equation. The
nonlinear Hirota equation is one of the integrating equations and the Hirota system is used in the field of study of
optical fiber systems, physics, telecommunications and other engineering fields to describe many nonlinear
phenomena. To date, the first, second, and n-order Darboux transformations have been developed for the twodimensional
system of Hirota equations, and the soliton, rogue wave solutions have been determined by various
methods.
In this article, we consider the two-dimensional nonlinear Hirota equations. Using the Lax pair and Darboux
transformation we obtained the first and the second multi-line soliton solutions for this equation and provided
graphical representation.