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arXiv 1003.3055hep-thastro-ph.COgr-qc
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Horava-Lifshitz引力中的光滑宇宙学相变

Smooth cosmological phase transition in the Horava-Lifshitz gravity

Edwin J. Son, Wontae Kim

摘要:

我们证明了在没有"细致平衡"条件的HL引力中,如果暗标量能量密度为负,则从早期宇宙的第一加速膨胀到第二加速膨胀的宇宙学相变是可能的.此外,我们还得到了不同尺度因子和膨胀率的演化。最后,我们讨论了与无奇性条件有关的最小尺度的存在性。

英文摘要:

We show that the cosmological phase transition from the first accelerated expansion in the early universe to the second accelerated expansion over the intermediate decelerated expansion is possible in the HL gravity without the ``detailed balance'' condition if the dark scalar energy density is assumed to be negative. Moreover, we obtain various evolutions depending on the scale factor and the expansion rate. Finally, we discuss the existence of the minimum scale in connection with the singularity free condition.

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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