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Combining pointwise Green's function bounds obtained in a companion paper [MZ.2] with earlier, spectral stability results obtained in [HuZ], we establish nonlinear orbital stability of small amplitude viscous shock profiles for the class of…

Analysis of PDEs · Mathematics 2007-05-23 Corrado Mascia , Kevin Zumbrun

We give the first proof of nonlinear stability for smooth shock profiles of second-order dissipative hyperbolic-hyperbolic systems under the assumption of spectral stability, showing stability of smooth small-amplitude profiles in…

Analysis of PDEs · Mathematics 2025-10-13 Matthias Sroczinski , Kevin Zumbrun

This paper studies the stability of weak dispersive shock profiles for a quantum hydrodynamics system in one space dimension with nonlinear viscosity and dispersive (quantum) effects due to a Bohm potential. It is shown that, if the shock…

Analysis of PDEs · Mathematics 2023-03-10 Raffaele Folino , Ramón G. Plaza , Delyan Zhelyazov

A bottleneck in the theory of large-amplitude and multi-d viscous and relaxation shock stability is the development of nonlinear damping estimates controlling higher by lower derivatives. These have traditionally proceeded from…

Analysis of PDEs · Mathematics 2026-02-25 Kevin Zumbrun

Using a simplified pointwise iteration scheme, we establish nonlinear phase-asymptotic orbital stability of large-amplitude Lax, undercompressive, overcompressive, and mixed under--overcompressive type shock profiles of strictly parabolic…

Analysis of PDEs · Mathematics 2007-05-23 Peter Howard , Kevin Zumbrun

For strictly entropic Riemann shock solutions of strictly hyperbolic systems of balance laws, we prove that exponential spectral stability implies large-time asymptotic orbital stability. As a preparation, we also prove similar results for…

Analysis of PDEs · Mathematics 2022-07-27 Grégory Faye , L. Miguel Rodrigues

We establish sharp pointwise Green's function bounds and consequent linearized and nonlinear stability for smooth traveling front solutions, or relaxation shocks, of general hyperbolic relaxation systems of dissipative type, under the…

Analysis of PDEs · Mathematics 2007-05-23 Corrado Mascia , Kevin Zumbrun

By reduction to a generalized Sturm Liouville problem, we establish spectral stability of hydraulic shock profiles of the Saint-Venant equations for inclined shallow-water flow, over the full parameter range of their existence, for both…

Analysis of PDEs · Mathematics 2018-10-04 Alim Sukhtayev , Zhao Yang , Kevin Zumbrun

A compressible viscous-dispersive Euler system in one space dimension in the context of quantum hydrodynamics is considered. The dispersive term is due to quantum effects described through the Bohm potential and the viscosity term is of…

Analysis of PDEs · Mathematics 2023-03-10 Raffaele Folino , Ramón G. Plaza , Delyan Zhelyazov

We establish pointwise bounds for the Green function and consequent linearized stability for multidimensional planar relaxation shocks of general relaxation systems whose equilibrium model is scalar, under the necessary assumption of…

Analysis of PDEs · Mathematics 2008-09-25 Bongsuk Kwon , Kevin Zumbrun

Reaction-nonlinear diffusion partial differential equations can exhibit shock-fronted travelling wave solutions. Prior work by Yi et. al. (2021) has demonstrated the existence of such waves for two classes of regularisations, including…

Dynamical Systems · Mathematics 2023-08-02 Ian Lizarraga , Robert Marangell

We prove the linear orbital stability of spectrally stable stationary discrete shock profiles for conservative finite difference schemes applied to systems of conservation laws. The proof relies on an accurate description of the pointwise…

Numerical Analysis · Mathematics 2024-12-03 Lucas Coeuret

Extending to systems of hyperbolic--parabolic conservation laws results of Howard and Zumbrun for strictly parabolic systems, we show for viscous shock profiles of arbitrary amplitude and type that necessary spectral (Evans function)…

Analysis of PDEs · Mathematics 2007-05-23 Mohammadreza Raoofi , Kevin Zumbrun

We investigate existence and stability of viscoelastic shock profiles for a class of planar models including the incompressible shear case studied by Antman and Malek-Madani. We establish that the resulting equations fall into the class of…

Analysis of PDEs · Mathematics 2015-05-19 Blake Barker , Marta Lewicka , Kevin Zumbrun

This work establishes nonlinear orbital asymptotic stability of scalar radiative shock profiles, namely, traveling wave solutions to the simplified model system of radiating gas \cite{Hm}, consisting of a scalar conservation law coupled…

Analysis of PDEs · Mathematics 2009-05-28 Corrado Lattanzio , Corrado Mascia , Ramon Plaza , Toan Nguyen , Kevin Zumbrun

Building on work of Barker, Humpherys, Lafitte, Rudd, and Zumbrun in the shock wave case, we study stability of compressive, or "shock-like", boundary layers of the isentropic compressible Navier-Stokes equations with gamma-law pressure by…

Analysis of PDEs · Mathematics 2017-06-12 Nicola Costanzino , Jeffrey Humpherys , Toan Nguyen , Kevin Zumbrun

In this paper, we consider the large time asymptotic nonlinear stability of a superposition of shock waves with contact discontinuities for the one dimensional Jin-Xin relaxation system with small initial perturbations, provided that the…

Analysis of PDEs · Mathematics 2014-02-12 Hualin Zheng

We establish existence with sharp rates of decay and distance from the Chapman--Enskog approximation of small-amplitude shock profiles of a class of semilinear relaxation systems including discrete velocity models obtained from Boltzmann…

Analysis of PDEs · Mathematics 2009-01-23 Guy Metivier , Kevin Zumbrun

We report a proof that under natural assumptions shock profiles viewed as heteroclinic travelling wave solutions to a hyperbolically regularized system of conservation laws are spectrally stable, if the shock amplitude is sufficiently…

Analysis of PDEs · Mathematics 2025-01-14 Johannes Bärlin

We study the spectral stability of a family of periodic wave trains of the Korteweg-de Vries/Kuramoto-Sivashinsky equation $ \partial_t v+v\partial_x v+\partial_x^3 v+\delta(\partial_x^2 v +\partial_x^4 v)=0$, $\delta>0$, in the Korteweg-de…

Analysis of PDEs · Mathematics 2012-03-01 Mathew A. Johnson , Pascal Noble , L. Miguel Rodrigues , Kevin Zumbrun
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