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In this paper, we establish the existence and stability properties of odd periodic waves related to the Klein-Gordon type equations, which include the well known $\phi^4$ and $\phi^6$ models. Existence of periodic waves is determined by…

Analysis of PDEs · Mathematics 2020-08-13 Fábio Natali , Guilherme de Loreno

In this paper we establish the orbital stability of periodic traveling waves for a general class of dispersive equations. We use the Implicit Function Theorem to guarantee the existence of smooth solutions depending of the corresponding…

Analysis of PDEs · Mathematics 2019-09-17 Fábio Natali

In this paper, we establish orbital stability results for \textit{cnoidal} periodic waves of the cubic nonlinear Klein-Gordon and Schr\"odinger equations in the energy space restricted to zero mean periodic functions. More precisely, for…

Analysis of PDEs · Mathematics 2025-04-08 Guilherme de Loreno , Gabriel E. B. Moraes , Fábio Natali , Ademir Pastor

In this work we find explicit periodic wave solutions for the classical $\phi^4$-model, and study their corresponding orbital stability/instability in the energy space. In particular, for this model we find at least four different branches…

Analysis of PDEs · Mathematics 2020-05-22 José Manuel Palacios

In this paper, we determine orbital and linear stability of periodic waves with the mean zero property related to the Intermediate Long Wave equation. Our arguments follow the recent developments in \cite{andrade-pastor}, \cite{natali} and…

Analysis of PDEs · Mathematics 2016-03-11 Jaime Angulo , Eleomar Cardoso , Fabio Natali

In this paper we establish the orbital stability of periodic waves related to the logarithmic Korteweg-de Vries equation. Our motivation is inspired in the recent work \cite{carles}, in which the authors established the well-posedness and…

Analysis of PDEs · Mathematics 2015-10-23 Fábio Natali , Ademir Pastor , Fabrício Cristófani

In this paper, we establish a new criterion for the orbital stability of periodic waves related to a general class of regularized dispersive equations. More specifically, we present sufficient conditions for the stability without knowing…

Analysis of PDEs · Mathematics 2019-11-15 Fabrício Cristófani , Fábio Natali , Ademir Pastor

In this paper, we prove existence and orbital stability results of periodic standing waves for the cubic-quintic nonlinear Schr\"odinger equation. We use the implicit function theorem to construct a smooth curve of explicit periodic waves…

Analysis of PDEs · Mathematics 2022-04-21 Giovana Alves , Fabio Natali

In this paper, we present new results regarding the orbital stability of solitary standing waves for the general fourth-order Schr\"odinger equation with mixed dispersion. The existence of solitary waves can be determined both as minimizers…

Analysis of PDEs · Mathematics 2024-12-02 Handan Borluk , Gulcin M. Muslu , Fábio Natali

We consider stability of periodic travelling waves in the generalized reduced Ostrovsky equation with respect to co-periodic perturbations. Compared to the recent literature, we give a simple argument that proves spectral stability of all…

Analysis of PDEs · Mathematics 2017-03-08 Anna Geyer , Dmitry E. Pelinovsky

In this work we study the orbital stability of periodic traveling-wave solutions for dispersive models. The study of traveling waves started in the mid-18th century when John S. Russel established that the flow of water waves in a shallow…

Analysis of PDEs · Mathematics 2015-12-23 Thiago Pinguello de Andrade , Ademir Pastor

In this paper, we present the first result concerning the orbital stability of periodic traveling waves for the modified Kawahara equation. Our method is based on the Fourier expansion of the periodic wave in order to know the behaviour of…

Analysis of PDEs · Mathematics 2019-08-23 Gisele Detomazi Almeida , Fabrício Cristófani , Fábio Natali

In this work we study the orbital stability/instability in the energy space of a specific family of periodic wave solutions of the general $\phi^{4n}$-model for all $n\in\mathbb{N}$. This family of periodic solutions are orbiting around the…

Analysis of PDEs · Mathematics 2020-08-12 Gong Chen , José M. Palacios

Periodic travelling waves are considered in the class of reduced Ostrovsky equations that describe low-frequency internal waves in the presence of rotation. The reduced Ostrovsky equations with either quadratic or cubic nonlinearities can…

Analysis of PDEs · Mathematics 2016-03-10 Edward R. Johnson , Dmitry E. Pelinovsky

The purpose of this paper is to prove that, for a large class of nonlinear evolution equations known as scalar viscous balance laws, the spectral (linear) instability condition of periodic traveling wave solutions implies their orbital…

Analysis of PDEs · Mathematics 2022-09-05 Enrique Álvarez , Jaime Angulo Pava , Ramón G. Plaza

The present paper deals with sufficient conditions for orbital stability of periodic waves of a general class of evolution equations supporting nonlinear dispersive waves. Our method can be seen as an extension to spatially periodic waves…

Analysis of PDEs · Mathematics 2016-11-16 Giovana Alves , Fábio Natali , Ademir Pastor

New results concerning the orbital stability of periodic traveling wave solutions for the "abcd" Boussinesq model will be shown in this manuscript. For the existence of solutions, we use basic tools of ordinary differential equations to…

Analysis of PDEs · Mathematics 2022-05-04 Gabriel E. Bittencourt Moraes , Guilherme de Loreno , Fábio Natali

In this paper, the existence and orbital stability of the periodic standing waves solutions for the nonlinear fractional Schrodinger (fNLS) equation with cubic nonlinearity is studied. The existence is determined by using a minimizing…

The nonlinear Schroedinger equation has several families of quasi-periodic travelling waves, each of which can be parametrized up to symmetries by two real numbers: the period of the modulus of the wave profile, and the variation of its…

Analysis of PDEs · Mathematics 2009-11-11 Thierry Gallay , Mariana Haragus

In this paper, we study the orbital stability for a four-parameter family of periodic stationary traveling wave solutions to the generalized Korteweg-de Vries equation. In particular, we derive sufficient conditions for such a solution to…

Analysis of PDEs · Mathematics 2009-02-09 Mathew A. Johnson
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