Extension of rational sine-cosine and rational sinh-cosh techniques to extract solutions for the perturbed NLSE with Kerr law nonlinearity
Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, 54590, Lahore, Pakistan
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Accepted: 9 January 2019
Published online: 16 April 2019
In this paper, we present the extension of the rational sine-cosine method and rational sinh-cosh method to construct the new exact solutions of a nonlinear evolution equation that appears in mathematical physics, specifically the perturbed nonlinear Schrödinger equation (NLSE) with Kerr law nonlinearity. As a result, trigonometric, hyperbolic and complex function solutions in the form of solitons and periodic wave solutions are characterized with some free parameters of the problem studied. The obtained results demonstrate that the proposed techniques are the significant addition for exploring various types of nonlinear partial differential equations (PDEs) in applied sciences. Moreover, graphical representations and physical explanations of some chosen exact solutions are plotted to describe the propagations of traveling wave solutions.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019