Optimal time-decay estimates for the compressible Navier-Stokes-Poisson equations without additional smallness assumptions

Weixuan Shi

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arXiv · 1908.01209

Optimal time-decay estimates for the compressible Navier-Stokes-Poisson equations without additional smallness assumptions

Weixuan Shi

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Abstract

The present paper is dedicated to the large time asymptotic behavior of global strong solutions near constant equilibrium (away from vacuum) to the compressible Navier-Stokes-Poisson equations. Precisely, we present that under the same regularity assumptions as in \cite{SX2}, a \textit{different} time-decay framework of the $\dot{B}_{p,1}^{s}$ norm of the critical global solutions is established. The proof mainly depends on the pure energy argument \textit{without the spectral analysis}, which allows us to remove \textit{the usual smallness assumption of low frequencies of initial data}.

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Weixuan Shi. 2019-08-03. Optimal time-decay estimates for the compressible Navier-Stokes-Poisson equations without additional smallness assumptions. https://arxiv.org/abs/1908.01209

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