Long-Time Behavior towards Shock Profiles for the Navier-Stokes-Poisson System

Long-Time Behavior towards Shock Profiles for the Navier-Stokes-Poisson System

We study the stability of shock profiles in one spatial dimension for the isothermal Navier-Stokes-Poisson (NSP) system, which describes the dynamics of ions in a collision-dominated plasma. The NSP system admits a one-parameter family of smooth traveling waves, called shock profiles, for a given fa...

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Hauptverfasser: Kang, Moon-Jin, Kwon, Bongsuk, Shim, Wanyong
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description We study the stability of shock profiles in one spatial dimension for the isothermal Navier-Stokes-Poisson (NSP) system, which describes the dynamics of ions in a collision-dominated plasma. The NSP system admits a one-parameter family of smooth traveling waves, called shock profiles, for a given far-field condition satisfying the Lax entropy condition. In this paper, we prove that if the initial data is sufficiently close to a shock profile in $H^2$-norm, then the global solution of the Cauchy problem tends to the smooth manifold formed by the parametrized shock profiles as time goes to infinity. This is achieved using the method of $a$-contraction with shifts, which does not require the zero mass condition.
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title Long-Time Behavior towards Shock Profiles for the Navier-Stokes-Poisson System
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