Decay of the Navier-Stokes-Poisson equations

Details Decay of the Navier-Stokes-Poisson equations Decay of the Navier-Stokes-Poisson equations

2011-12-21

arxiv.org/abs/1112.4902v1

Mathematics

Analysis of PDEs

20 pages

Scientific paper

We establish the time decay rates of the solution to the Cauchy problem for the compressible Navier-Stokes-Poisson system via a refined pure energy method. In particular, the optimal decay rates of the higher-order spatial derivatives of the solution are obtained. The $\Dot{H}^{-s}$($0\le s<3/2$) negative Sobolev norms are shown to be preserved along time evolution and enhance the decay rates. As a corollary, we also obtain the usual $L^p$--$L^2$($1

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