论文标题

一个非单明的封闭弹跳宇宙,而无需违反无效的能量条件

A non-singular closed bouncing universe without violation of null energy condition

论文作者

Ahmed, Nasr, Kamel, Tarek M., Nouh, Mohamed I

论文摘要

已经提出了一个弹跳熵校正的宇宙学模型。该模型仅允许具有负压的正曲率,并且不违反无效能量条件。在本文中获得的结果得到了一些最近的理论作品的支持,在这些工作中,正空间曲率和真空能的组合会导致非单明的弹跳,而无需违反无效能量条件。当前模型的一个重要特征是,宇宙压力,能量密度和状态参数方程的进化与校正后熵 - 面积关系中的预成分$α$和$β$的值无关。已经讨论了经典和新的非线性能量条件的有效性。已经分析了cosmography参数

A matter bouncing entropy-corrected cosmological model has been suggested. The model allows only positive curvature with negative pressure and no violation of the null energy condition. The result obtained in this paper is supported by some recent theoretical works where the combination of positive spatial curvature and vacuum energy leads to non-singular bounces with no violation of the null energy condition. An important feature of the current model is that evolutions of the cosmic pressure, energy density and equation of state parameter are independent of the values of the prefactors $α$ and $β$ in the corrected entropy-area relation. The validity of the classical and the new nonlinear energy conditions has been discussed. The cosmographic parameters have been analyzed

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