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We propose a discrete Darboux-Lax scheme for deriving auto-B\"acklund transformations and constructing solutions to quad-graph equations that do not necessarily possess the 3D consistency property. As an illustrative example we use the…

Exactly Solvable and Integrable Systems · Physics 2022-04-27 Xenia Fisenko , Sotiris Konstantinou-Rizos , Pavlos Xenitidis

The countless applications of ultrashort laser pulses in very different scientific areas explain the ongoing efforts to develop new strategies for the generation of light pulses with increasingly better characteristics. In this work, we…

For the nonlocal Davey-Stewartson I equation, the Darboux transformation is considered and explicit expressions of the solutions are obtained. Like the nonlocal equations in 1+1 dimensions, many solutions may have singularities. However, by…

Exactly Solvable and Integrable Systems · Physics 2018-08-09 Zi-Xiang Zhou

The $N$-soliton solution is presented for a two-component modified nonlinear Schr\"odinger equation which describes the propagation of short pulses in birefringent optical fibers. The solution is found to be expressed in terms of…

Exactly Solvable and Integrable Systems · Physics 2011-07-06 Yoshimasa Matsuno

Coupled modified nonlinear Schr\"{o}dinger(CMNLS) equations describe the pulse propagation in the picosecond or femtosecond regime of the birefringent optical fibers. In this paper, we use the Fokas method to analyze the initial-boundary…

Mathematical Physics · Physics 2017-04-13 Beibei Hu , Tiecheng Xia

We derive a new kind of effective broadband polarization device using the analogy between the equation for the polarization of light, propagating through an optically anisotropic medium, and the optical Bloch equation in adiabatic regime,…

Optics · Physics 2011-11-29 A. A. Rangelov

In this paper, we obtain the Nth-order rational solutions for the defocusing nonlocal nonlinear Schrodinger equation by the Darboux transformation and some limit technique. Then, via an improved asymptotic analysis method relying on the…

Exactly Solvable and Integrable Systems · Physics 2021-11-17 Tao Xu , Lingling Li , Min Li , Chunxia Li , Xuefeng Zhang

We derive two new solutions in terms of elliptic functions, one for the dark and one for the bright soliton regime, for the semi-discrete cubic nonlinear Schroedinger equation of Ablowitz and Ladik. When considered in the complex plane,…

Pattern Formation and Solitons · Physics 2014-06-26 K. W. Chow , Robert Conte , Neil Xu

Under investigation in this paper is the nonisospectral and variable coefficients modified Kortweg-de Vries (vc-mKdV) equation, which manifests in diverse areas of physics such as fluid dynamics, ion acoustic solitons and plasma mechanics.…

Pattern Formation and Solitons · Physics 2017-10-17 Ling-Jun Liu , Xin Yu

We study solitary wave solutions of the higher order nonlinear Schrodinger equation for the propagation of short light pulses in an optical fiber. Using a scaling transformation we reduce the equation to a two-parameter canonical form.…

patt-sol · Physics 2009-10-30 M. Gedalin , T. C. Scott , Y. B. Band

The system of equations describing an ultrashort optical pulses propagation in semiconductor superlattice with applied magnetic field was obtained based on Boltzmann equation in the relaxation-time approximation for the single electron…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 M. B. Belonenko , E. N. Nelidina

It is well known that the nonlinear Schr\"odinger (NLS) equation is a very important integrable equation. Ablowitz and Musslimani introduced and investigated an integrable nonlocal NLS equation through inverse scattering transform. Very…

Exactly Solvable and Integrable Systems · Physics 2016-03-15 Jia-Liang Ji , Zuo-Nong Zhu

In the recent comment quoted in the title (arXiv:1407.7852v1), a comment is presented on our recent work which derive a generalized nonlinear wave solution formula for mixed coupled nonlinear Sch\"{o}dinger equations by performing the…

Exactly Solvable and Integrable Systems · Physics 2014-08-12 Liming Ling , Li-Chen Zhao , Boling Guo

In the second half of the 19th century Darboux obtained determinant formulae that provide the general solution for a linear hyperbolic second order PDE with finite Laplace series. These formulae played an important role in his study of the…

Exactly Solvable and Integrable Systems · Physics 2025-06-24 Sergey V. Smirnov

Unidirectional pulse propagation equations [UPPE, Phys. Rev. E 70, 036604 (2004)] have provided a theoretical underpinning for computer-aided investigations into dynamics of high-power ultrashort laser pulses and have been successfully…

Optics · Physics 2012-10-02 J. Andreasen , M. Kolesik

In this paper nonlinear Klein-Gordon equation for heat and mass transport in nanoscale was proposed and solved. It was shown that for ultra-short laser pulses nonlinear Klein-Gordon equation is reduced to nonlinear d`Alembert equation. The…

General Physics · Physics 2007-05-23 Janina Kozlowska , Miroslaw Kozlowski , Magdalena Pelc

Propagation equations for optical pulses are needed to assist in describing applications in ever more extreme situations -- including those in metamaterials with linear and nonlinear magnetic responses. Here I show how to derive a single…

Optics · Physics 2014-05-14 Paul Kinsler

We consider the modulated harmonic wave in the discrete series connected Josephson transmission line (JTL). We formulate the approach to the modulation problems for discrete wave equations based on discrete calculus. We check up the…

Pattern Formation and Solitons · Physics 2024-07-01 Eugene Kogan

We introduce a hybrid Cole-Hopf-Darboux transformation to relate solutions of nonlinear and linear second order differential equations and derive a sufficient condition for this correspondence. In particular we show that solutions of some…

Mathematical Physics · Physics 2012-11-29 Mayer Humi

We study optical pulse propagation through a hollow-core fiber filled with a radially inhomogeneous cloud of cold atoms. A co-propagating control field establishes electromagnetically induced transparency. In analogy to a graded index…

Atomic Physics · Physics 2019-07-31 Roman Sulzbach , Thorsten Peters , Reinhold Walser