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arXiv 1206.6948gr-qc
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半经典引力中幽灵暗能量宇宙的命运II:标量幽灵场

On the fate of the phantom dark energy universe in semiclassical gravity II: Scalar phantom fields

Jaume de Haro, Jaume Amoros, Emilio Elizalde

摘要:

研究了无质量场与引力共形耦合的量子修正,以观察它们是否能避免在充满暗能量的平坦Friedmann-Robertson-Walker宇宙中出现的恼人的Big Rip奇点。模型的动力学讨论的两个参数,命名为$α>0$和$β<0$,对应于正则化过程的所有值。新的结果进行了比较,在\cite{hae11}以前,其中暗能量建模的幻影流体与状态方程$P=ωρ$,与$ω<-1$。

英文摘要:

Quantum corrections coming from massless fields conformally coupled with gravity are studied, in order to see if they can lead to avoidance of the annoying Big Rip singularity which shows up in a flat Friedmann-Robertson-Walker universe filled with dark energy and modeled by a scalar phantom field. The dynamics of the model are discussed for all values of the two parameters, named $α>0$ and $β<0$, corresponding to the regularization process. The new results are compared with the ones obtained in \cite{hae11} previously, where dark energy was modeled by means of a phantom fluid with equation of state $P=ωρ$, with $ω<-1$.

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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