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arXiv 0908.2836gr-qc
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任意阶宇宙学后牛顿展开

Cosmological post-Newtonian expansions to arbitrary order

Todd A. Oliynyk

摘要:

我们证明了依赖于奇异参数$\ep=v_T/c$ $(0<\ep < \ep_0)$的Einstein-Euler方程的一大类单参数解族的存在性,其中$c$是光速,$v_T$是引力流体的典型速度.这些解决方案被证明存在于一个共同的时空板$M\cong [0,T)\times \Tbb^3$,并收敛为$\ep \searrow 0$的宇宙学牛顿引力的泊松-欧拉方程的解决方案。此外,我们建立,这些解决方案可以扩展的参数$\ep$的任何指定的顺序与膨胀系数,满足$\ep$ -独立的(非局部)对称双曲方程。

英文摘要:

We prove the existence of a large class of one parameter families of solutions to the Einstein-Euler equations that depend on the singular parameter $\ep=v_T/c$ $(0<\ep < \ep_0)$, where $c$ is the speed of light, and $v_T$ is a typical speed of the gravitating fluid. These solutions are shown to exist on a common spacetime slab $M\cong [0,T)\times \Tbb^3$, and converge as $\ep \searrow 0$ to a solution of the cosmological Poisson-Euler equations of Newtonian gravity. Moreover, we establish that these solutions can be expanded in the parameter $\ep$ to any specified order with expansion coefficients that satisfy $\ep$-independent (nonlocal) symmetric hyperbolic 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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