Limits: Journal of Mathematics and Its Applications
Vol. 23 No. 1 (2026): Limits: Journal of Mathematics and Its Applications Volume 23 Nomor 1 Edisi Ap

Solusi Soliton On-Site Persamaan Saturable Discrete Nonlinear Schrödinger Menggunakan Metode Newton

Galang Vinarky (Mathematics Graduate Program Universitas Syiah Kuala)
Tarmizi Usman (Mathematics Department Universitas Syiah Kuala)
Muhammad Ikhwan (Mathematics Department Universitas Syiah Kuala)
Harish Abdillah Mardi (Graduate School of Mathematics and Applied Sciences, Universitas Syiah Kuala)



Article Info

Publish Date
16 Apr 2026

Abstract

The discrete nonlinear Schrödinger equation is a differential equation that describes wave propagation in a discrete lattice. This equation has solutions with very interesting characteristics, namely solitons. Two types of solitons that can be obtained from this differential equation are on-site and inter-site solitons. The equation that is the focus of this study is the discrete nonlinear Schrödinger equation with saturable type nonlinearity. The on-site soliton solution in this study is obtained by substituting an ansatz into the equation to obtain a stationary equation. This stationary equation is then solved using Newton's method. The solution is then analyzed for stability by adding a perturbation term to the solution ansatz. This study aims to find the on-site soliton solution, analyze the effect of coupling parameters, nonlinearity, and trapping potential on the soliton profile, and analyze the stability of each solution obtained by the linear perturbation technique. The results show that variations in the values ​​of the coupling parameters and the given nonlinearity and trapping potential affect the on-site soliton profile, both in terms of profile width and soliton amplitude. All obtained solutions are declared stable based on linear stability analysis.

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Journal Info

Abbrev

limits

Publisher

Subject

Computer Science & IT Mathematics

Description

Limits: Journal of Mathematics and Its Applications merupakan jurnal yang diterbitkan oleh Pusat Publikasi Ilmiah LPPM Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia. Limits menerima makalah hasil riset di semua bidang Matematika, terutama bidang Analisis, Aljabar, Pemodelan Matematika, ...