论文标题
关于广义的Lemaitre-Tolman-Bondi度量。物质术后重组结束时的分形物质
On Generalized Lemaitre-Tolman-Bondi Metric. Fractal Matter at the end of Matter-Antimatter Recombination
论文作者
论文摘要
许多最近的研究调查了弗里德曼宇宙学模型的偏差，以及它们对无法解释的宇宙学现象的后果，例如暗物质和宇宙的加速。一方面，对物质不均匀性的一阶扰动研究对暗物质和暗能量的部分解释是由于远处的潜力延迟而引起的相对论效应。另一方面，现在以Lemaitre-Tolman-Bondi（LTB）度量进行建模的分形宇宙学导致SNE IA的光度距离扭曲，从而显而易见加速度。在这项工作中，我们将LTB指标扩展到远古时代。物质分布的起源被解释为物质术后重组时期后的物质残留。我们表明，这种不均匀性的演变必然需要LTB的动态概括，我们提出了一种特定的解决方案。
Many recent researches have investigated the deviations from the Friedmannian cosmological model, as well as their consequences on unexplained cosmological phenomena, such as dark matter and the acceleration of the Universe. On the one hand, a first order perturbative study of matter inhomogeneity returned a partial explanation of dark matter and dark energy, as relativistic effects due to the retarded potentials of far objects. On the other hand, the fractal cosmology, now modeled with a Lemaitre-Tolman-Bondi (LTB) metric, results in distortions of the luminosity distances of SNe Ia, explaining the acceleration as apparent. In this work we extend the LTB metric to ancient times. The origin of the fractal distribution of matter is explained as the matter remnant after the matter-antimatter recombination epoch. We show that the evolution of such a inhomogeneity necessarily requires a dynamical generalization of LTB, and we propose a particular solution.
