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arXiv 1201.3769gr-qcastro-ph.CO
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关于含时Schwarzschild-de Sitter时空

On the time dependent Schwarzschild - de Sitter spacetime

Hristu Culetu

摘要:

分析了具有能流的不完美宇宙流体。即使它的能量密度$ρ$是正的,压力$p = -ρ$由于该度量是渐近的de Sitter。计算了非测地同余的运动学量。标量展开与时间无关,但在奇点$r = 2m$处发散。在远离中心质量$m$和宇宙时间$\bar{t} << H^{-1}$的情况下,热通量$q$不依赖于牛顿常数$G$。

英文摘要:

An imperfect cosmic fluid with energy flux is analyzed. Even though its energy density $ρ$ is positive, the pressure $p = -ρ$ due to the fact that the metric is asymptotically de Sitter. The kinematical quantities for a nongeodesic congruence are computed. The scalar expansion is time independent but divergent at the singularity $r = 2m$. Far from the central mass $m$ and for a cosmic time $\bar{t} << H^{-1}$, the heat flux $q$ does not depend on Newton's constant $G$.

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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