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arXiv 1001.5263gr-qc
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C-度量的理想流体推广

Expanding perfect fluid generalizations of the C-metric

Lode Wylleman, David Beke

摘要:

重新研究了具有空间均匀能量密度的理想流体产生的PetrovD型引力场,其中流线形成类时非剪切非旋转汇点.结果表明,各向异性的时空,其中包括真空C-度规作为一个极限情况,可以有\emph{non-zero}扩展,相反的结论,在原来的调查巴恩斯(Gen. Rel.重力4,105(1973))。这类宇宙学模型一般由一个至多两个Killing向量组成。我们构造了它们的线元并讨论了一些重要性质。在这项调查中使用的方法煽动推导出可测试的标准关于无剪切正常和静态彼得罗夫型$D$时空一般,我们添加在附录中。

英文摘要:

We reexamine Petrov type D gravitational fields generated by a perfect fluid with spatially homogeneous energy density and in which the flow lines form a timelike non-shearing and non-rotating congruence. It is shown that the anisotropic such spacetimes, which comprise the vacuum C-metric as a limit case, can have \emph{non-zero} expansion, contrary to the conclusion in the original investigation by Barnes (Gen. Rel. Grav. 4, 105 (1973)). This class consists of cosmological models with generically one and at most two Killing vectors. We construct their line element and discuss some important properties. The methods used in this investigation incite to deduce testable criteria regarding shearfree normality and staticity op Petrov type $D$ spacetimes in general, which we add in an appendix.

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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