arXiv 1303.26582013-03-11astro-ph.COgr-qc

探索统一暗动力学的两种方法

Probing two approaches to Unified Dark Dynamics

Jorge L. Cervantes-Cota, Alejandro Aviles, Josue De-Santiago

备注：: 20 pages, 5 figures, 1 table. arXiv admin note: substantial text overlap with arXiv:1108.2457
发表信息：: AIP Conf. Proc. 1548, pp. 299-313 (2013)
DOI：: 10.1063/1.4817061

摘要：

暗物质和暗能量是描述晚期宇宙的基本要素，至少在平等时代是这样。另一方面，暴胀也是必要的，并且需要一个“暗”成分，通常与一个标量场有关，这个场在非常早期的宇宙中主导着动力学和运动学。然而，宇宙学标准模型的这三个暗成分是相互独立的，尽管有其他模型追求实现三重统一，或者至少是双重统一。在目前的工作中，我们提出了一个更新的两个模型，我们已经考虑在最近几年。第一个是“暗流体”模型，在这个模型中，暗物质和暗能量是同一个东西，实现了具有特定性质的双重统一，精确地模拟了宇宙学的标准模型，给出了LCDM模型中存在的暗简并。第二个模型由一个F（X）标量场拉格朗日量给出，用它可以模拟从暴胀到今天的整个宇宙动力学，代表一个三重统一模型。我们强调这些模型的主要属性，以及我们测试他们对已知的宇宙学探测器。

英文摘要：

Dark matter and dark energy are essential in the description of the late Universe, since at least the epoch of equality. On the other hand, the inflation is also necessary and demands a "dark" component, usually associated to a scalar field that dominated the dynamics and kinematics in the very early Universe. Yet, these three dark components of standard model of cosmology are independent from each other, although there are alternative models that pursue to achieve a triple unification, or at least a double. In the present work we present an update of two models that we have considered in recent years. The first is the "dark fluid" model in which dark matter and dark energy are the same thing, achieving a double unification with specific properties that exactly emulate the standard model of cosmology, given the dark degeneracy that exists in the LCDM model. The second model is given by a single F(X) scalar field Lagrangian, with which one is able to model the whole cosmological dynamics, from inflation to today, representing a triple unification model. We highlight the main properties of these models, as well as we test them against known cosmological probes.

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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英文摘要：

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