Updated observational constraints on quintessence dark energy models
Updated observational constraints on quintessence dark energy models
复制标题
更新了典型暗能量模型的观测约束
DOI：
10.1103/physrevd.97.043503
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发表时间：
2018
影响因子：
8.6
通讯作者：
N.Sugiyama
中科院分区：
文献类型：
--
作者：
J.Durrive; J.Ooba;K.Ichiki;N.Sugiyama
最近的GW170817测量偏向于最简单的暗能量模型，比如单个标量场。根据状态方程是否偏离状态方程，将精粹模型分为冻结和解冻两类。本文利用普朗克2015年发布的最新数据、联合光曲线分析和重子声学振荡，对跟踪冻结、缩放冻结和解冻模型状态方程的参数进行了观测约束。由于目前对哈勃参数值的紧张，不像以前的作者，我们让这个参数变化，这大大修改了结果。最后，我们还推导了每种情况下中微子质量的约束条件。
The recent GW170817 measurement favors the simplest dark energy models, such as a single scalar field. Quintessence models can be classified in two classes, freezing and thawing, depending on whether the equation of state decreases towardsor departs from it. In this paper, we put observational constraints on the parameters governing the equations of state of tracking freezing, scaling freezing, and thawing models using updated data, from the Planck 2015 release, joint light-curve analysis, and baryonic acoustic oscillations. Because of the current tensions on the value of the Hubble parameter, unlike previous authors, we let this parameter vary, which modifies significantly the results. Finally, we also derive constraints on neutrino masses in each of these scenarios.