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arXiv 0903.5231hep-thastro-ph.COgr-qc
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quintessence/phantom暗能量宇宙中球对称时空的奇异性

Singularity of spherically-symmetric spacetime in quintessence/phantom dark energy universe

Shin'ichi Nojiri, Sergei D. Odintsov

摘要:

我们考虑理想流体和等效标量场暗能量宇宙中所有四种已知类型的有限时间,未来的奇点发生在一些参数值。结果表明,在球对称时空中,这种精粹/幻影暗能量的压力/能量密度在有限半径处或中心处发散。这可能会导致宇宙中相对论性恒星或黑洞的不稳定性。简要地讨论了通过对状态方程的额外修改来解决这个问题。

英文摘要:

We consider ideal fluid and equivalent scalar field dark energy universes where all four known types of finite-time, future singularities occur at some parameter values. It is demonstrated that pressure/energy density of such quintessence/phantom dark energy diverges in spherically-symmetric spacetime at finite radius or at the center. This may cause the instability of the relativistic star or black hole in such universe. The resolution of the problem via the extra modification of the equation of state is briefly discussed.

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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