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arXiv 2304.04050math.AP
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Cahn-Hillard与Keller-Segel系统作为Euler-Korteweg和Euler-Poisson方程的高摩擦极限

Cahn-Hillard and Keller-Segel systems as high-friction limits of Euler-Korteweg and Euler-Poisson equations

Dennis Gallenmüller, Piotr Gwiazda, Agnieszka Świerczewska-Gwiazda, Jakub Woźnicki

AI总结:

本文研究了带摩擦的Euler-Korteweg和Euler-Poisson方程联合系统,证明了耗散测度值解的存在性,并证明在γ≥2时Cahn-Hillard-Keller-Segel系统的强解是该系统的高摩擦极限。

摘要:

我们考虑带有摩擦和指数压力(指数γ>1)的Euler-Korteweg和Euler-Poisson方程的联合系统。我们证明了在Euler-Poisson系统中排斥势和吸引势情况下耗散测度值解的存在性。后者需要对γ施加额外限制。此外,在γ≥2的情况下,我们证明了Cahn-Hillard-Keller-Segel系统的强解是Euler-Korteweg-Poisson方程耗散测度值解的高摩擦极限。

英文摘要:

We consider a combined system of Euler--Korteweg and Euler--Poisson equations with friction and exponential pressure with exponent $γ> 1$. We show the existence of dissipative measure-valued solutions in the cases of repulsive and attractive potential in Euler--Poisson system. The latter case requires additional restriction on $γ$. Furthermore in case of $γ\geq 2$ we show that the strong solutions to the Cahn--Hillard--Keller--Segel system are a high-friction limit of the dissipative measure-valued solutions to Euler--Korteweg--Poisson equations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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