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arXiv math-ph/0607012math-phmath.MP
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引力情形下相对论Vlasov-Poisson系统的整体存在性和非线性稳定性

Global existence and nonlinear stability for the relativistic Vlasov-Poisson system in the gravitational case

Mahir Hadzic, Gerhard Rein

摘要:

从R. Schaeffer等人的研究表明,引力Vlasov-Poisson方程组整体解的存在性结果中所使用的主要能量估计不适用于该方程组的相对论解,并且具有球对称负能量初值的初值问题的光滑解在有限时间内爆破.基于同样的原因,本文还介绍了Y. Guo和G. Rein得到的Vlasov-Poisson系统的非线性稳定性结果在相对论情形下不适用。本文用一种直接的、非变分的方法证明了相对论性Vlasov-Poisson系统的某些定态对球对称、动态可及扰动的非线性稳定性。由此产生的稳定性估计意味着光滑的解决方案与球对称的初始数据,这是足够接近的稳定的稳态存在全球的时间。

英文摘要:

As is well known from the work of R. Glassey} and J. Schaeffer, the main energy estimates which are used in global existence results for the gravitational Vlasov-Poisson system do not apply to the relativistic version of this system, and smooth solutions to the initial value problem with spherically symmetric initial data of negative energy blow up in finite time. For similar reasons the variational techniques by which Y. Guo and G. Rein obtained nonlinear stability results for the Vlasov-Poisson system do not apply in the relativistic situation. In the present paper a direct, non-variational approach is used to prove nonlinear stability of certain steady states of the relativistic Vlasov-Poisson system against spherically symmetric, dynamically accessible perturbations. The resulting stability estimates imply that smooth solutions with spherically symmetric initial data which are sufficiently close to the stable steady states exist globally in time.

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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